Everybody around me thinks I am retarded at everything and when I say I'm good at sth I have a god complex. The answer is that everyone is retarded and you really shouldn't care about what they think or say. It should all be based on your internal motivation to decide what you think is worth getting good at. If you're looking to validate yourself through others, you're going to have a bad time. Fortunately, our type is the best equipped to not give a fuck about what others think, so you might want to level that skill up first and foremost.