I had a fraction of a bitcoin that I bought at $330. I kept it to sell at a better price. But it went up to $500. I thought to have keep the coin until price goes to anew level. My guess turned wrong, as price reverses back to $300+ suddenly. Then I waited for 2 more weeks and sold when it hit $450. It is profit for me. But I failed to utilize the swing that I clearly got. I would have made 2 or 3 trades and tripled my money.