If you are a person with no trading experience its best to Hodl for long-term after you have thoroughly researched the project and only invest the amount you can afford to loose.

Another strategy could be to keep selling 10% of the coin with every 100 % rise till you reach 50-25% and then HODL this way you wont have much of FOMO as well as ATH feel.

plus you can reinvest part of the 10% you sell in other promising projects and grow your portfolio.

Patience and thorough research is the key.