I have gotten some nice knowledge concerning bitcoin investment in this thread and am still learning in the process 700 pages of bitcoin knowledge and still counting all thanks to JJG and other reputable fellow in this thread.
If you are a HODLer keep buying and hodling bitcoin if you are still procastinating on when to buy you can buy today if you have your discretionary income already starting buying and HODL you can begin with little amount and gradually increase according to the level of your discretionary using the DCA strategy.

Just buy and bitcoin and HODL in summary.