blankminds think alike

My mind stays in a state of blankness, no more do i have the quick wit of my youth and sharp mind. I sometimes even find it hard to maintain a conversation with someone because i cant think of the next thing to say to further the convo. Its a depressing state of mind to be in, previously i had always been the delight of people Im with. Im 27 now, i feel like ive lost my memory, i should have been writing more stuff down. i always thought that my memory would serve me well and as i got older i would be happy because of all the great memories ive had. Because ive lived a pretty awesome life, so far, in my perspective atleast. I love music, i love everything it, the production, performance, the feeling, everything. Ive spent many years of my youth going to see various concerts, festivals, tours, and i partied while there. But i feel as tho my mind doesnt keep up with that of my friends, i seem to have to think of things to say when the room goes silent, i never just have something funny come to me anymore and just say it, or something interesting for that matter. I just exist. Ive smoked a lot of tree over my years and had an opiate addiction to which im clean of, been clean for 3+ years, Its like im stuck in that bullshit highschool mindset where im still trying to act cool around some of my closest friends and girlfriend, but im just not cool anymore lol.