You have to know that it's going to be alright. I do the same thing a lot of the time, in terms of being attracted easily to people I know I can't have, won't be able to get or don't have the same interest in me as opposed to some of the guys who have liked me and I don't want. Look at it as; you know who and what kind of women you're interested in and you know what kind you aren't. You can't change how you react to some people but you can change the qualities and reasons you're looking for in a person. I know you can't make yourself become physically attracted to anyone and it's not being picky, it's just finding what makes you happy but in the healthy way.
If you know you're going after women that are out of reach for you and always will be, that's something you have to change yourself. But if it's of all the women who have liked you before just don't appeal to what you want, wait it out. BUT only if it's the healthy kind of not being attracted, and not the kind where you're holding out for someone you can't have.