this is a bit contradictory in my opinion. because a "project" in this context means a cryptocurrency and believing in it means you believe that this cryptocurrency will reach mass adoption and be used in the world more. for example when you believe in bitcoin it means you believe that bitcoin will reach mass adoption and because of its scarce supply and the huge demand that will come, the price will be a lot higher than this.
in this case talking about "shoot up" in short term is crazy in my opinion. you invest in such things for long term not for short term fluctuations and "shoot ups". and the sad part is that when it comes to altcoins none of them have that long term potential.

but i agree with the other part of your comment and that is why i do too. i invest in coins that are rising (pumping) and take the profit and bring it back to what i believe in (which is bitcoin) and store for long term.