So far, every fiat currency in the world is inflationary. It will always decrease in value overtime in the long run. Its a guaranteed loss !
Whenever you sell bitcoin, you are buying a fiat currency; making sure you will lose in the long run
TLDR: JUST HODL BTC
The best idea is hold your money in different currencies (including criptocurrency) and hold in different places. Following this way you will minimize risk to loose money