I would like help with a translation for “remember your purpose” or something similar

Question

After a particularly painful life shakeup, I want a tattoo that reminds me every day what I am supposed to do going forward.

I would like it to be “remember your purpose” or “remember why” or something else very similar.

If someone could help me with this, I would be deeply appreciative. I have no experience with Latin.

Answer 1

Finem tuum memento.

This is a variant of Manuel's suggestion. Here finem means "end" in the philosophical sense.

The meaning of finis (accusative finem) is given here.

Answer 2

Memento propositi tui/ Memento propositum tuum

"Tene propositum(tuum)" "keep to your purpose"