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 think it's depends to you, but for me i will take profits maybe sell 10-30% from my ethereum investment to using for my my needs, because i think is very risk if sell all, because ethereum is one of many potential coins, in the future the price can back about $900, or even more maybe $9000 but all need time, that's why holders is best way Suggestion is appreciated.