the more experience we have, the more we will grow and know what to do,
talking about Bitcoin there is no need to doubt it.
Better to do your own DYOR and decide to whatever project you think will gives you the outcome that you desire, it's not good to listen to anyone's advise, it's better to use that as referrence to do your deeper research about the project, if after reviewing and you see that there's really a good potential then that's the right timing to invest your money.
The best project always rely on how you do your research and study, both with the potential of the coin and the team behind the project, you also need to consider who's the people behind and what are the venue that the team is targetting to make the project successful.