Best:Working for people with money and crazy projects in mind. Working for dreamers. Working for people that believe in you, as a decision maker, stack choices. Choose not to be a pawn.

Worst: not leaving a company when they indiscriminately lie in the job offer. HR will never say bug fixing (that's like going to a date saying you have a micropenis from the beggining), they will say integrations, product improvement... If then all the tickets are bug fixing i should have said something in the first month.