Kaizen is the idea of continuous improvement.
In anyway shape or form.
Today, write a lyric. Write a poem. Play guitar. Watch a Reason tutorial video. Read a book on How2Rap. Run a few laps around your block. Do those vocal exercises. Find out who Robin Frederick is.
Do something that will make you 1% better than you were yesterday.
It adds up.
Of course, always feel free to go more than 1%. go 110% if you want.
But keep going.