Feeling your own Chi

[Six Trails]

Are there any examples of this in the manga?

 

[SSJ2]

Goku knowing he cannot defeat Evil Boo.

 

[SSJ2]

Literally any time someone knows that they are outclassed by another ki implies that you can sense your own.

 

[Evil Vegeta]

Aside from the above, Krillin seems to feel his power after his potential is unlocked. Piccolo felt his power after merging with Nail, Goku felt his power after leaving the healing tank, Gohan felt his Chi fall to less than half after Cell's attack.