What would you do when you lose your motivation to learn languages?

Hi there!

I'm learning some languages for fun and it does release the stress from my busy daily life.However lately I somehow feel a bit tired of learning and cannot keep passion.in it.

I'm wondering what would you do when it happens on you? (I believe I'm not the only one) would you change the materials, or rest for a while? What's the best way to get back to it for you? ;)