Real men are never satisfied with themselves, yet at the same time they are confident because they know their own abilities and their reactions to certain experiences.
This lack of satisfaction with self leads to a desire to challenge oneself and to grow through the challenge. That's where the joy comes from when testing yourself against a strong opponent or in difficult circumstances. There is always joy in knowing that you are a better man.
On the other hand, if you never seek out challenges you will never develop the confidence of self-awareness. Can I suggest a place to start challenging yourself? Diet and exercise. Correct diet gives you the energy to exercise and exercise develops your physical and mental capabilities. This is the foundation for further success in challenges which leads to much rejoicing in your manliness!