I'm 27 years old, currently doing a Master's course in eletrical engineering in Germany.
I have a problem with my mindset having to do with my past. When I was 16 I was strongly addicted and smoked weed every day. After finishing school I got involved with new friends and more drugs while doing an apprenticeship (training for a practical job in Germany). I struggled but ended somehow managed to complete it.
After that (at age 19) I started undergrad studies and things went downhill. Obviously partying and using drugs while studying is not the best combination. After 2 years I realized that something has to change. I changed my field of study and left all of my friends.
It took me about 2 years to regain focus and start learning. I somehow started being highly motivated and performed very well. I also started an industry job while studying and did well there, too.
But now it hurts to see how much time I wasted. My colleagues are almost 5 years younger than me. I know that I can be proud of myself for achieving what I did, but I can't let go of these regrets.
My questions are:
How can I deal with these feelings?
Also, how should I discuss the wasted time in a job interview?