The retention of coins and tokens does not always succeed, if only because not all of them are equally profitable. Many coins, and especially tokens, which eventually disappear forever from the market. Therefore, you need to know what is done in the projects of coins and tokens, which you are holding. However, in order to increase profitability, it is necessary, at least at large peak values of their rise in growth, to at least partially sell them and then buy them on their obvious depressions. Because only retention is effective with their continuous growth, and this does not always happen.