I think this is a pretty normal feeling to have. For myself it was a fine line between “accepting reality” and actual depression. Getting older and realizing half of your life is behind you is not the most uplifting topic.
So that would be my first piece of advice, get some counseling or other mental health help.
As for what to do beyond that, you didn’t really say much in your post. You briefly mentioned your relationship status, so it seems that might be a area to start in. The good news for you is that at 35 it is perfectly acceptable to be dating people in their mid to late 20s, so you still have plenty of time to start a relationship and have a family.
From my personal experience being married and having children will completely disabuse you of your current feelings. You may have other problems to deal with, but “what to do with the next 20 years” won’t be one of them.
So that would be my first piece of advice, get some counseling or other mental health help.
As for what to do beyond that, you didn’t really say much in your post. You briefly mentioned your relationship status, so it seems that might be a area to start in. The good news for you is that at 35 it is perfectly acceptable to be dating people in their mid to late 20s, so you still have plenty of time to start a relationship and have a family.
From my personal experience being married and having children will completely disabuse you of your current feelings. You may have other problems to deal with, but “what to do with the next 20 years” won’t be one of them.