So you think you're stupid.

 You aren't. You are out of your element.

As everyone is when either surrounded by, or traumatized by, others who see anything you present like as dumber or lesser or as dumb or less or unnecessary or optional or a negative thing, or who would see the real you as any of that.

Only you can decide what you want your element to be, which is automatically what it is. It can and does change. But your actual element is always the positive. It's the positive you see in otherwise-negative situations. The situations you best see the positive in are your element.

So only you can accurately determine what and where and with whom and how and why and what-when your element is. 

But you are essential now no matter how you present, and no matter how long it takes for your actual self to come out... regardless... and you always were, and when you are in your element that is just when those surrounding you start to understand and appreciate how essential you are, and it also mean you are meeting or being with those who already on all levels both knew, and saw first hand and personally, from the beginning, exactly how you were always essential.