Hi Sophia,
The major problem that you have is not that you need to grow your eyelashes, but that there are situations in which you are exhibiting an obsessive/ compulsive behaviour. This seems to happen whenever there is a stressful situation. You need to consult a Psychiatrist at the earliest, or at least cosult your school Psychologist. Medications and counselling will help you to tackle the situations.
Hope this helps.
Regards
I too have dealt with this infliction for a number of years. Always when I am anxious. I completely understand the embarrassment - I would have many bare spots on my lids. It takes a very conscious effort to stop and/or medicine and/or therapy. I have had all. When I get that urge, I ALWAYS look for something to do with my hands. I wish you lots of luck.