For the last 8 years or so I’ve had this feeling that time is running out, along with a load of regret that I didn’t do more / make different choices. For perspective, I’m 55 this year, have a successful career, love my job, head a department, lived abroad from 30-52 (one year travelling and the rest working) and have 2 teenage kids. I just can’t shake off this feeling that I wish I was in my 30s or 40s and that I’ll blink and be too old to do anything!! Talk me out of this ridiculousness.