BJJ's full resistance nature makes it conducive to the forming of real confidence (not the false aura of invincibility and contradictory humbleness found in many TMA schools, AKA "Beggar's humility"). Having a real idea of what you can actually do is great. There is nothing more confidence boosting than forcing a person who struggles as hard as they can to give up and there is nothing more humbling than having the same happen to you.
Grappler or not you are a terrible martial artist IMO.-sanchin31, friend to all children