You definitely don't need permission to take profit or not, you knew what you invested so if it's time you wish to have profit then you can go ahead and i really understand you knew how the market was so if i would advised taking profit is always the best coupled with the market instability. Isn't really favorable to hold any Altcoin now, if i m to asked converting your Altcoin to stablecoin would be a great idea than to hold.