In 3 years, I am 100% sure that 1BTC = 1BTC. No more no less.

Miracles don't happen when you keep watching for them. I understand to want to get rich quick, we all would want that, but we don't have the crystal ball at hand...
If you believe in Bitcoin, hold some, as many as you think you can and hope for the best.
If you have a business or an idea that could help Bitcoin, even better: you'll earn money from it and Bitcoin will grow more and faster.