Go join a Boxing / MMA gym and learn to fight. You will get strength, character, physique and confidence. You'll also put on muscle, and get what is known as 'brotherly love' that turns into Mutual Respect. Its one step into making you a man and fighter. A lot of bullied and weak people at young started off this way, then they ended up becoming who we now know as Bruce Lee or Mike Tyson. Women can love an ugly man, if he is bold enough to live life the way he wants to.
Excel and be good at whatever you do for a living, and help other people. It will make you feel good about yourself.
That being said, you can grab yourself by the balls and do it the hard way. From that point onward, once you make that choice, life will get easier.