very easy, when you first buy bitcoin means then you have invested with bitcoin, and just have to hold it.
if you want to make bitcoin, as a future investment, you just have to hold it for as long as possible.
I believe the saving is the most important thing to do so by the bitcoin and then hold for the long time because it is very important to have the bitcoin and to buy a lot of thing for you in the future, he income of the bitcoin is getting high and you will be able to get the income if you are patient for the long time investment. The money is the key to the success some plane with the bitcoin is to save for the future.