Have food and shelter and education you purport to have Official Don’t dream it be it The Rocky Horror Picture Show red lips shirt by tshirtat store. The experience might be about the only thing I can possibly think of that would provide a sufficient level of brain douche or mental floss that would give you a chance at being productive. You will find it difficult to bring yourself up while you bring your family down because you are a subset of your family. Since you were born, they shaped you as much as you shaped them to maintain the relationship you have with them now.
So if they really are as hopeless as you claim, then you are probably just as hopeless Official Don’t dream it be it The Rocky Horror Picture Show red lips shirt by tshirtat store. If you can accept this proposition, then you can stay positive by helping them find positivity in their lives. Or, you yourself can be the source of their positivity and this whole issue would not be a problem in the first place! With this type of pep talks and positive interpretations of their circumstances, people motivate themselves and stay positive.
You can also consider finding friends who can keep you positive the way you want it. It will take time to explore, but there are really great people out there and you may find yourself in a group of supportive people who you want to be with. Then hopefully you will bring your now-positive self to your family and they will find hope in their lives, too. I hope this helps. Edited to lessen the negativity in the original answer. It’s absolutely valid to point out that there have been many successful people who did not necessarily have an amazing family.