Never spend or sell all your bitcoin never again , though there is a need to cash out yet always maintain some funds inside because we never know what will happen next day.
Honestly when I was entering into bitcoin adoption, I was fixing some big target levels and ones those targets will be achieved I was in plan to exit crypto space all at once. But, after gaining knowledge about bitcoin ecosystem and its futures, I slowly changed my plans and now I'm in plan to keep my bitcoins till my of life and I will suggest my kids to keep on investing and holding bitcoin forever so that they might be getting better financial life compared to replying on other traditional investment opportunities.
in investing of course we must have a target time, I think 60 days is too short to get a profit, usually I target about 6 months, and in fact as long as we can be patient then we will get a profit.
I don't think so; at least with respect to bitcoin investments. The longer you will be holding bitcoins, the better benefits you could enjoy.