There is plenty of hope for you! I have just gotten my first mt bike after about 15 years of not riding. I found a very sturdy 29 inch wheel mt bike that so far has been holding up very very well. Today I did my first mile or so. I am really out of shape, so had to take it slow and building up to it, you can do it!!! Diet will be key too, won't loose weight and hit your goals is you ride but eat processed fast foods etc. the game for me so far has been all mental! The greatest war we have to win is the war that starts in our head!