What stopped you when the price was low? don't let the sudden increase make you rush into the market- learn to control your emotions.
One of the challenges of some traders is that they don't know when is the right time to enter the market. Some traders feels when the market is red it is always a wrong time to get into the market to trade. If the green should only be considered as the best time to enter the market, I think it won't always be a right decision. Going into the market when it is green is just greedy sentiment for trading.
Most of the traders even for the experienced one, they don't know when to trade. Sometimes when they want to buy, the price keep rising so they think they have no chance because the price is expensive and they think the price will suddenly go down after they buy and vice versa. I have experienced that similar things and it's normal to face that when you are trading.
This is why you need analysis/research and being up to date with the news so you know at least what to expect with the assets you are trading with.