Hey, it's been a long time since I have posted here, let alone visited here. Over the years, I have always tried to keep up with my piano skills the best I can, despite not being a music major or doing music professionally. However, in the last few years, I have reached a point where I have problems that I never had when I was younger. Mainly these problems are related to whenever I'm trying to do a recording and/or perform in front of any audience. I feel as though I am a shadow of my former abilities.
So anyways, this is the problem at hand. When I sat down to record some piano covers, I realized that I didn't feel like I'm there completely. I know the piece backwards and forwards, note by note, and can play it flawlessly a few times. However, just as I sit down to record, everything feels different. I feel as though as things are just unfamiliar and then when I start to play, my brain just shuts down and kind of takes a vacation. At the time of the recording, it was a chore just to play through a segment, let alone the whole piece. It's like my brain is only using 40-60% of it's capacity rather than 100% and my focus is shot too.

I suppose it's performance anxiety and/or other stuff, but I have never had that problem in the past, only in the last few years (fairly recently). In fact, when I was younger, I could perform and record without much of a sweat and didn't really affect my focus/concentration or nerves that much. Nowadays, I just couldn't do it.
I must find a way to subconsciously trick my brain into thinking that I'm practicing, but that's easier said than done.Before anyone suggests getting therapy or professional help, I don't find them useful. I been there and done that, I am not wasting more time and money for nothing. (In before, you didn't find the right therapist/professional/counselor/meds/etc.) Also, as far as pills and medicine are concerned, I don't want to use them as there are ramifications with them, such as becoming addicted, becoming dependent on them, and of course, it would wreck my musicality, thus leading me to have a boring interpretation of music. But I digress and don't want to go off on too much of a tangent as that's another topic altogether.
Due to my current issues in music, at the forefront, I can forget even about learning to play by ear, forget even trying to learn improve, or other stuff. I got more than enough on my plate to handle for now. I would be lucky if I would even be able to get my focus, confidence, and my nerves under control and be able to perform very comfortably in front of people (LIVE) and/or record myself.
As for the people who say to practice MORE, well I prepared as well as I can with the pieces that I am recording. During practice, I am 100% focused and calm, and can run through the piece like it's nothing at all. I also know the piece really well and can play at different segments and what not. It's just that when I start recording that everything just goes to hell in a handbasket.

It sounds like if I didn't even know the piece, nor practiced before (which is not true). My focus and concentration just tanks (like to 40-60% capacity) and everything falls apart. I know the solution lies in tricking my brain into thinking that I'm practicing (even if I'm performing or recording), but again that's easier said than done. I am just unable to reach that state of calmness that I had when I was younger.

I'm just so distraught right now, that I even question about my abilities. I know that I am capable of playing difficult repertoire and playing it well. I am at my wits end. Sometimes, I even get so upset that I've considered quitting or starting all over with level 1 music and doing some really, really basic exercises (which is sad). Please help.