Tamas, Rajas, Sattva and Goldilocks.

Sattva is light, Rajas is movement and Tamas is stillness, stagnation and darkness. An adversity can start in Rajas, things start to move. Things moving around might fall into the stagnation of Tamas. It's like you are moving, but you are not moving anywhere, and by having the insight of that (of moving but being stuck) you are having a sattvic experience.
Sattva is clear thoughts, truthful speach and open heart.
Goldilocks tried out the rajasic and tamastic in the to cold and to hot purridge. She tried out the chairs that was to big. She lay in the bed that was to hard and in the bed that was to soft. This gave her the knowledge to feel in her bones when it was just right. When is was sattvic. When the purridge had the perfect temptrature for her taste, the chair that had the perfect size and the bed that felt so comfy that she fell asleep.
You and I are no diffrent from Goldilocks.
Try things.
Experince things.
Let yourself gain the knowledge to feel deep in your bones when it's right for you.
When it's sattvic your mind will clear, you will feel that it's true and your heart will open.

Just like that.