A harmonica player from the Beginner to Boss course recently commented how frustrated he was trying to play 1/8 note triplets. That’s a good sign! These are 2 separate worlds:
The world of subdivisions divisible by 2 (called duple pulse or duple meter = quarters, 8ths, 16ths…)
and
The world of subdivisions divisible by 3 (called triple pulse, or triple meter = quarter note triplets, 8th note triplets…)
In fact they’re not just different worlds, they’re DIFFERENT GALAXIES, and if it doesn’t feel challenging to you to switch, then you’re probably not playing close enough attention! 
One great way to feel the difference between these 2 different galaxies is to play them at the same time which is often referred to as feeling 2 against 3 which I take about in this groove secret that’s “not difficult”.
I hope that helps you begin to consider the gravity of the 2-feel against the 3-feel. 
Onwards and upwards…