It gets harder to bounce as you get older, all you can do is things that you enjoy doing, do things that make you feel good about yourself, take a wander up through the countryside "the farther removed from nature the farther one becomes removed from the ralms of true joy" as Bob the spotted terrier once said. The most profound canine in history I'd wager.
You have to be open to accept love and to give it (you don't sound ready) you have to accept you may end up looking foolish. Faint hearts etc.
If you're in the mood for a wallow try "Humble Me" by Norah Jones off her "Sunrise" album (there's not a bad track on it) should hit the spot.
Good luck for the future.