It looks like selling your crypto for money when they are profitable is more safer than holding them for long, my point is only very few coins are worth holding for many years, if you still doubt about this go on coinmarketcap and look at most coins that came into this world in 2018 many of them have no volume again, the shocking one to me is gowithmi, a project that my elder brother praised so much at the time but today it's volume is not up to 50k, many projects will face same fate, be smart
Gowithme was just another ico hype project, with its broad concept and the team where unable to develop it accordingly, am surprise you are bringing that project up because the hype didn't last for too long before the value start depreciating and the community went suddenly quite, it seem the team already had their pocket filled and have no need to further the development of the project,
The success of a project depends on the determination of the team, don't expect to see volume when there is nothing new coming from the team.