Aging is...

Easing off the "go-pedal"

 Floating...just floating

Loosening...

Mellowing...

Lightening up!

Maturing

Developing over time...

Melting...

Relaxing...

Relenting...

Thawing...

Ripening...

Softening...

Becoming tender...

Surrendering...to life

Ooooozing...

Releasing...