Expectation leads to disappointment

Maya Angelo said, “if someone shows themselves to you - believe it”.
The quote is self-explanatory but I’ll expound further: 

So many times I’ve been fooled by people who aren’t who they claim to be. When I find out who they really are - (or more fairly, who they’re capable of being) - I become shocked and analytical. It’s the deepest cut, because not only have I been fooled, but I’ve allowed it to happen. Whilst, making the problem partly my fault. I ponder and question, looking for past signs, considering the ‘what ifs’ and ‘maybe nots’. But never have I been able to justify the situation.

It’s hard to fathom that someone you admire can possibly be someone you despise. It’s even more harder to swallow.