My memory is utterly fucked!!!

Hello everyone! Sorry for the language but there is no nice to put the state my mind is in currently.

I am that smart kid who grew up to not do as well as one would have thought, mostly because I relied on my talent without ever working on my skills. While I have realised that and have been working on my skills since, I have noticed that my memory is completely fucked. There is no nice of saying it honestly. I was someone who could recall every little detail about everything to barely being able to remember what was said in a meeting just yesterday. I used to be able to learn things once in class and be able to recall them directly in exams to a good extent.

I am sure a lot of it has to do with my mind's constant need to be stimulated and would like to know how one deals with this stuff and actually get back to how I used to be. Any timelines would also help.

Thanks in advance!