So with the current peak on Bitcon, Ethereum (and nearly all of my alt coins) is it wise to:
1) Take out the profit to either bank or reinvest when there is another dip
2) HODL in the hope that it keeps rising and rising
This first viewpoint is correct, since if you sell now and accept your profit, you will be able to re-enter the market when prices fall in a bear market. However, if you live it, it has led in greed, which will lead to a total loss with no chance of recovery, since even if you do recover, it will take a long time and is not guaranteed because some coins will not regain their value.