I'm tired

I'm tired I'm just tired... It is not stuttering itself that's making me tired, it is the mental effort I exert everyday to speak as normal as possible. When I became 17 years old (I'm 21 now), I thought that my anxiety and fear were the big factors that were making me stutter. However, as I grew up, became a supervisor at a retail customer service job, doing a lot of class presentations in college, and socially stepping out of comfort zone... I now have gained a lot of confidence 80% of my social anxiety is gone... and yet I still stutter. Yes, I may have more control when it comes to effectively using the right techniques and adjusting the pace and all that, I still put a tremendous amount of mental effort. No matter how confident or fearless I became, I sometimes slipp and stutter despite all this mental effort I'm putting and this is draining my soul. As bad as social anxiety made me feel, I was at least feeling something that somehow showed a goal to conquer. But now with that feeling gone, I just feel empty... I can't really think of anything else to improve. It is like lifting weights everyday without any rest and no matter how strong or big my muscles become, there is only a limit to what they can endure. Don't get me wrong, I still suffer from anxiety, but not social anxiety. After suffering bunch of panic attacks when I became 20, my anxiety now comes in a different form somehow. I just wanted to speak up my mind as no one within the people I know can understand. For those of you who don't fear talking to people anymore, how are you managing your stuttering?