I've held on to a lot, but today when I have a good profit I take that fraction and make a cash box to buy at corrections with low prices. $$$

I'm new to the crypto world, still trying to understand the market. I bought USUAL, 46 at 0.34 then 27 at 0.81 and then 41 at 1.16. I didn't sell at the high, because I didn't know how the market worked. Now it's below my last investment, almost to the point where the investment will start to go negative. Should I be worried?
Any optimistic advice or tips?