I start by saying that everything is relative! I have struggle all my life with similar issues. I was abused, unwanted and unloved. Throughout the years I have become stronger, independent and more confident. It has not been an easy road. I had to find out what the reasons for my struggles were, once you can somewhat see what the reasons are, you can begin to claw your way out of the gutter. There are so many reasons to continue to try every single day and sometimes every minute seems like an eternity. We must be reasonable in understanding that you can not fix everything quickly, that said, get your fists ready for a fight, the fight that is most important to you, yourself. I have learned not to get caught up in career paths and other people's happiness, instead I often take inventory of my own path, where am I going and where do I want to be.
Furthermore, keep yourself busy with things that interest you. Allow yourself time to visit your emotions, nobody can be happy all the time, allow even some time to be sad if you so desire or have a good cry if needed. But be aware not to linger in sadness, you give yourself an allotment of time to feel depressed if you want to, then you find something better to do. Be strict with yourself too, when it is time to be done with being miserable, you do just that. You get up and move to something else, you make yourself do something else, like go for a walk, listen to some happy music, read a book, get a tabloid newspaper and read it from cover to cover. I hope this helps you, life is difficult at times but it is worth living every day with hope, nobody can take your hope away.