1. Buy at Cheaper price as possible
Dollar Cost Averaging DCA is good because with DCA you will not have to think at what price you will make your next purchase and you don't have wait for cheaper price. You can purchase Bitcoin gradually with DCA.
https://dcabtc.com/2. Wait for your Target to Reach price Threshold
Taking profit is part of investment which gives you profit, better life, happiness but you should hold your bitcoin long enough to get good price to take profit at great rates. You should not take profit all bitcoins you accumulate because you will not know its future price. I don't advise you to hold your bitcoins forever and avoid taking profit but let's reserve one part of your bitcoins which you are afford to lose forever, to hold it about 20 to 30 years. Like 5% or 10% of your bitcoins.
3. Hold for maximum Years you can hold like 10 ns 20 Years[/b]
It's is my holding plan too.