I have a hard time dealing with my self esteem issues. Considering my body size, I'm slightly underweight and I'm on the thin and short side. Therefore, whenever I run into anyone that I deem attractive and sexually appealing, I get incredibly nervous and I start to think a lot of negative thoughts about my body, such as "he/ she would never be interested in a bag of bones," "I'm not tall enough," "my boobs/ butt aren't big enough," and etc., etc. If there's another female bodied figure in the room, I'm constantly comparing my shortcomings to their perfections.
I've tried to get better about it, but I'm starting to get anxiety when I talk to people because I subconsciously feel like my image and intellect are always being judged, even when I know that's not true.
If you do have issues, I would recommend opening up to a friend or a therapist. Just talking about it can alleviate the problem.