I only have two rules:
1. Buy low.
2. Sell high.
Unfortunately, I tend to break the rules often. I hope everyone else does better.
I did the same mistake, or many people also get into the same situation.
have bought when it drop, then sold at a higher price, but then I have to buy bitcoin again to accumulate more, unfortunately, butcoin set a new support level and resist at high price, it means I have to buy high, lol.
But doesn't mean you'll lose in trading as bitcoin price, yeahhh we know, hold and be patient, bitcoin will rise to the moon.