If you are an investor then you already have some target to achieve so sell it when your target reached or just play with your capital by selling and buying at the right times.Most of the traders and investors are doing like gambling which won't be successful in longer term.
Yes that is right, every investments should have targets to achieve. But firstly, Identify your investments whether it is for short, medium or long term investments. But the most important thing is don't be greedy, when it reaches your target then sell your coin/token then find another good entry point.
If we are to be truthful to ourselves, most investors don’t set target for themselves unlike trader, a trader could deposit money to trade and decide to always take profit at 5% on every trade, but an investor will just put in money with the hope of taking profit when the coin really go high, not many investor will put in money and say at 10% I will take my investment.
The point above is the reason why majority of us are waiting for bitcoin ATH, if we do set target, why are we all talking of ATH, at least, bitcoin has been increasing by certain percentages, we have people that bought BTC at 3k an still yet to take profit until it hit the ATH. SO I think, its only when we trade that we set target.