For me, the answer is mixed. I mean, overall the answer must be yes, or I wouldn't dedicate so much of my headspace and time to it.
In a lot of ways, I treat mushing as my therapy. I have a profound amount of emotional disconnect in my day to day life. If you ask me how I am, or how I am feeling there is a high probability I wouldn't be able to fully answer. But when I play a character, it almost always provides me insight into where my emotional triggers are. When they are happy, I feel happy. When they are devastated, I am devastated. I get a lot of emotional release out of it. It also helps me quantify what upsets me in a way that remains nebulous and ephemeral in the real world.
The problems I run into are, however, that my insecurities are often heightened and my social paranoia tends to be much more powerful given the lack of contextual information via body language and tone. So people who are naturally more brusque/curt immediately twig my 'I did something wrong, they are mad at me oh no oh no' triggers. So then it becomes a dance of self-awareness of my personal issues and the persistent, nagging belief that there IS something wrong I just have to keep digging until I find it (or create it by said persistent digging).
I am also a people pleaser who seeks outside validation like an addict. So, there are a lot of pay offs in terms of running things for people, or crafting things for people. Until I burn out.
For me the hobby is filled with extremes. Excellent highs, horribad lows. I'm slowly teaching myself how to find the balance. And I think that is one of my favorite things about this hobby. The opportunity it offers me to grow as a person. While at the same time losing myself in neat worlds and cool characters.