Many people wants to have a multiple profits, and they were strongly holding their coins for a long term, but if your coin now has a good market price value there is no reason to hold it, and if you are contented on the price today just sell it, but if you are not contented on the market price today, then continue holding until such time that the price of that certain coin grow up and fit to your needs.
I agree to this. Why are you making this decision based on the suggestions of other members ?
Different members here have different targets and approaches while investing. Some are here for short term trading and thus investing for a margin of 5-10% only. While others want a bigger cut and they can wait longer. Thus, it really depends on what is your target. Also, you need to take into consideration , your risk taking ability. If you do not like taking much risks, sell units sufficient to recover the investment cost and trade with remaining coins.
Pretty typical attitude of some newbie in this forum, I suggest, you do your home, read market research, fundamental of Coins posted on the treed, the strategy you should follow, this are important indicators that once should be understood in market trading in crypto currency. Buying or Selling is an Individual decision, we can not base our decision from other suggestion about the market strategy one should follow. The timing is very important to consider upon making such Sell into the trading market, the price value of one coins, can drops at any given time and goes up again, dependent on the volume of investment put in by investors during the trading market.