Climbing on people to get higher works until you need someone to catch you.

Using people as steps works right up until the moment you need something from one of them. What you built on the way up is a list of people who owe you nothing and remember exactly how they were treated. Nobody warns you about this in advance because the people you stepped on have no reason to. They simply are not there when the thing goes wrong.

Look at who has helped you recently and whether you have done anything for them since. Going back down a level to help someone costs an afternoon and changes what you are standing on.