Sometimes I feel as though I have the emotional maturity of a teenager even though I am 35. Maybe I do who knows. Who is to say what true maturity is unless you are throwing adult temper tantrums or engaging in fecel smearing.
I don't personally feel like a "man" because I never had a job, on SSI, and have my aunt as my payee. If I really have too I can be very mature under pressure or when I am speaking philosophy. I somehow expect everyone to do everything for me even though I wish things wasn't this way.
Intellectually I believe that I am incredibly mature. I can hold my own in a conversation and speak very passionately and soundly about what I believe in.
Diagnoseses such as depression, anxiety, CPTD, and BPD is not a marker for immaturity in my opinion. Each individual brain is very complex. It's hard to honestly put a number on it.
There has been times were I took charge and lead everything. There were times were everyone had to do everything for me. Nobody should have to do the latter.