I have invested in ETH when it was $105. Now it's $176. Will it be a good idea to take the profit now? Or I should hold on for better profit which may lead to less profit too

Suggestion is appreciated.
I suggest that it is better to hold the ethereum because i believe the popularity of ethereum in crypto market that could take the price higher than $176, ethereum is good for long term investment as many have earn huge of profit from ethereum.