Did the RN show you to push up from the base of the fingertip until it's reddish to get a better blood supply up there before trying to stick your finger?

Also, still at the top but more towards the side of your finger, close (but not too close) to your nail is also a good place to stick. It doesn't feel nice, but you usually only have to stick it once, so it's a good trade-off. I would milk blood up there first, too just to be safe...

Keeping your hands as soft as possible by applying lotion regularly will help prevent them toughening up too much and making it harder to get good sticks.

The more often you do it, the more you will find what works best for you, and it will get easier