I stutter still and it's tough but you really just have to accept that it's part of your life. You're not going to just wake up one day and be cured. I'm 31 and still struggle. I joined the Army and worked in mental health. It wad a struggle but the only way to improve is to get out of your comfort zone. Every stutter is different. I mainly get blocks but just avoiding life is only going to make you feel like how your post is. I remember what made me decide that I'd never let my stutter get in my way was in high school. It's embarrassing to say but I remember I'd cry sometimes, when I'd go to sleep, thinking I'd never be with the girl I liked so much because I'd be too scared to talk to her. But lo and behold we ended up together BUT we ended breaking up because I didn't talk much. That's when I stopped letting my stutter get in my way and hiding it. I let it be known thst I stutter and I wasn't going to let it stop me. Letting people know a head of time really helps a lot, for me at least. It takes away that anxiety. I wish you the best. You can do anything. Stuttering is a struggle but the only thing that will make anything impossible is you and your mindset. You can go far it's just up to you how far you're willing to push yourself and how uncomfortable you're willing to get. Just know you won't improve if you just remain comfortable.