My name is Evee. Not Evie or Eve, and in fact I dislike both of those names quite strongly.
When you hold your thumb, try and think of a safe and calming space. This could be a place that you imagine, like a beach with the sound of the waves, or it could be a memory where you remember feel particularly calm. For me it is lying back on the trampoline, feeling warm by the evening sun, at about 12 years old.