However, you should use this as a learning opportunity. Think back to your decision and try to objectively review your decision making process. Why did you make that decision? What information did you take into account? What other factors were at play?
Knowing what you know now, not counting the price, will you still make the same decision? Why or why not? You said you cannot explain the BTC and ETH price increases. Try to. Why do you think that happened? Could you have predicted those factors better?
Believe it or not, you will face this kind of situation again but you will be better prepared for it if you do some decision analysis.