Dude, one step at a time.
I have to tell you straight out: you have a lot in your New Years Resolution. I'll give you my advise and I hope it helps you in any way possible.
For starters, loosing weight is not easy. You have to have motivation and constant perseverance. No "oh I exersised every day last week, I can take a week off". No.
But if you take care of yourself, in time, you'll see change.
I gots a secret fora uuuu: Hakuna Matata!
It means you need to leave your behind in the past--- no, wait, strike that, reverse it... You have put your past behind you... acknowledge that you have made some serious mistakes, learn from them, and forgive yourself.
And as for number 3..... Don't we all! lol we all wish for happiness... well most of us .. but I have a question for you: What kind of happiness are you looking for? weath? health? money? friends? success? family? or a New Life?
I cannot advise you on leaving everything behind and going off in a new direction. The reason is that I have no idea what you would be leaving or what you would be going to. If you are able to drop everything right now and move on, like for instance a job that you hate and you want to quit and go back to school so that you can go for a carreer that you enjoy.. then i would say by all means. However, if you are not able to drop everything right now and go on, for example you have a spouse, family, friends, or anybody who relies on you to be apart of their lives (ask em)..... then I would say no. I have no advise, however, on that piece.
How can you have an optimistic life that moves forward? welllll, you think optimistically. When I figured out what i wanted to do with my life, and found something that I was passionate about, my whole life began to take shape into a really good looking future... I found that when I helped people, seeing their joy was the greatest happiness that I would feel. I love cooking for the homeless shelter and being able to chat with people who need someone to chat to... and making someone laugh whos crying from suffering... is my passion. Find something that gives you happiness... could be art, cooking, photography, singing or music, drawing, making buildings, caring for animals, becoming a doctor, reading or writing, etc. there are millions of activities that you could do... find something that interests you.
Its a good start....
And number four... if you want to break your thoughts and actions you have to catch your self beforehand and stop yourself.... and then just don't think about it and don't do it. I mean keep your self occupied, read interesting mystery books or adventure novels or thrillers, just don't let your mind have the luxury or the time to think about whatever you dont wanna think about.... and as for acts ... if the actions are betraying or hurting or even disrespecting people you love or care about, then use them as a stop sign. If you atcually care about all the people you love, then their happiness will be and is more important then the temptation of the actions. If you care, then their happiness will over override and make you have the courage and motivation to turn away from whatever actions. I don't know if that made sense... hope it did.
"The future belongs to those who have the courage to live their dreams." ~ Les Brown
"Plans are only good intentions unless they immediately degenerate into hard work." ~ Peter F. Drucker
Hope you have a wonderful day!
Love and Blessings,
My thoughts and brainyqoute.com