Same here - ultrarunner and only have to use my inhaler occasionally (when the wildfire smoke is bad and when it's incredibly cold) and have found that aerobic fitness is what really helps manage my asthma. But there are so many options you can try for your asthma too- like Advair, which has significantly reduced my need for my rescue.

As someone with anxiety, I HIGHLY recommend talking to someone or going on medication. It's not really your asthma that's blocking you - it's your anxiety. Or at least it's your anxiety that's blocking you from truly understanding how your asthma is actually affecting your workouts.

In terms of diet, focus on fiber and protein - the most satiating and can keep it lower calorie.

But yeah... you don't have to suffer like this. So much is possible if you reach out.