So lets see what makes you a loser: You say that...
"I was not good in school"
I don't think anyone was ever good at school. Nerds had social problems, jocks had academic issues, average (Joe's & Jane's) felt like they didn't fit in. So this cannot be a valid reason. Yes you are allowed to smile even just a little bit:)
" I had no friends and nobody really liked me"
Well the good news is that you HAD no friends so what you have NOW?. I gather that this is related to your youth time again yeah been a parent ain't easy hey. Can you honestly say that you never never ever ever had anyone that you knew, and greeted and had a little chat on one occasion and several occasions and that one you were younger than 10 you played with no one? I think all of us has/had a least 1 friend in our life time. Friends is like a Color Cube Puzzle you have to match the colors up, some prefer to make a pattern, or do their own thing others prefer to match them up, how do you prefer you Color Cub Puzzle to be complete? Then use that as a starting point in BUILDING friendships that LAST as friends are not really forever, but in general people have about 5 (and thats a high number) friends who stick together for a long time.
"My marriage was a joke"
No, it was an eye opener:) You were treated like sh*** but hey half the men/women in the world are treated like that. Women unfortunately get the worst of it. So have a heart, more women are treated like sh*** than men in a marriage. So it just means you are that closer to finding someone who won't treat you like that.
"I had a son who my mom and another lady raised cuz I wasnt good enough"
Hell man, my mom told me in my days "no women would want me" my sister told me "you will amount to nothing", and the outcome I stuck to my values, beliefs, and people don't see as any of the above, in fact the opposite and no I ain't that great looking according to our lovely media or society just because of me. What people say, and do that concerns us. Does not make us that UNTIL we choose to lay down and accept it. That is your son, and you should fight for him no matter what or who gets in your way but they again comes to what you believe WITHIN. PS: I get alone very well with my mom and sister no grudges or going back to the past, its what I choose.
"I am 43 years old, ugly fat"
Age no one can stop. Fat, well now their is something we can change. Lets be honest, if you feel that you want to lose the weight then you need to know that its going to take blood sweat and tears to lose it and don't be a fool who thinks that it will happen in a month, because it will not, more like a few months but it all depends on HOW much you put IN that determines HOW much gets OUT:) plus you will start to feel so so so much better inside, emotionally.
"I have no purpose in life"
Their is no purpose in life! Ask someone who comes from a wealthy background, poor background, and one who grew up as an orphan what their purpose in life would be. 9 out of 10 it would lie along the lines of something similar to their background, but what do you think the orphan would say and the poor one? Makes you wonder or does it. Purpose is like a company's mission statement very deary and mundane would you not say. Change the word purpose to LIFE, then it sounds like "I have no life in life" Now answer this, what is life in life? That is a question that only each and ever individual irrespective of background would have to answer according to what life means to them, and that is what determine our choices, and where we will be tomorrow.
"I tried going back to college but failed at that"
Why did you back? Answer that. You only failed because you stopped trying. Think about it, if you never stopped then you never failed but because you did thus you failed. In a nutshell, again it comes to choices but what motivates us to keep trying are the reason why we are doing it.
"Was in a car wreck and I am in pain all the time"
This can be solved by a doctor. Its like tooth ache, when it pains we see a dentist and they do their thing and the pain is gone, but if we take a pain killer it goes away temporarily but will come back, then eventually the tooth decays away. Pain happens for a reason, its our body saying Hey You! something is not right, please go check it out as I am unable to fix it myself. So, I sincerely hope you able to have it checked out and that it is nothing serious.
"I have no meaning to live anymore"
Okay this one should be at the end it more like a closing but because you choose not to put it at the end and it would be a inner choice, hints to me that you actually want to live, in fact you want to live your life and not the next persons or how society wants you to live it. So, give me 5 you on the path of great change.
"I am to stupid to kill myself I have tried and even failed at that"
In your one of your previous statements you said "I am fat" well if you are doing nothing about it then you are busy killing yourself. So you not stupid at all and if you have done nothing about your fat, then you have not failed at all. Before you answer this, think about it carefully, killing yourself is a sin, one that damns your soul. Now, if you think killing yourself will make your life better then you a fool. A fool to think that by not trusting in a higher being (I believe in God) than you, you are actually saying that you are better than the higher being who has more knowledge in power than any of us. That is what suicide actually represents that are better than something more greater than us and what reward lies for those who think or make their choices that leads to that.
I had many many friends but as life moved on so have they, some just broke away, and I am glad for that because I can see their true persona now. Something that does not compliment me. Life has never been easy, nor sweet but I never stopped believing that I could change it. Finding Mrs right is still a mission and one that I am up for because I will never stop believing no matter what wrongs have been done to me in the past, and no matter what happens.
A loser is not one who rights down their reasons why they are loser, they are one who have seen their destiny and now have the power to achieve it by change certain things through what they have experienced. Most people have not experienced this. I hope you see the positiveness in your post, the hope and the future of it. When the world lets you down, don't frown be glad for your heart lies closer to God.