I will never have 21 bitcoins.
If you say you'll never have 21 bitcoins, you're right...you never will.
Where's your confidence?
Don't get stuck in the past! Think about where we are today and how lucky you'll be in 5 or 10 years that you knew about bitcoin today. What can you save in a month? Take that money and buy bitcoin. Fractions every moth add up to a whole in surprisingly quick time. Just make it automatic and stop discouraging yourself!
Yup you are right. We must forget the past and move on. Even me has regrets because Ive heard Bitcoin 3 years ago and do nothing about it because I doubted it and think it has no potential. We may not earn 21 BTC in an instant but keep moving forward. At least save up money monthly and invest it on bitcoin. Im not building illusions I'm just saying what we can do at the meanwhile. We all have regrets but that's how we grow, that's why we learn. Have faith in yourself do the work and believe, negativity will bring you down. Look at the brighter side of the future.