There are 3 things you must do in order to make that change, according to Ustaz Haslin :
1) start with small things
This concidentally echoes Shaykh Yahya Ibrahim's point on the best (deed) are usually the simplest
2) start with yourself
Shaykh Sulaiman Moola says,
"Yesterday I was clever, so I wanted to change the world.
Today I am wise, I'm changing myself."
3) start today
"Make time for ilm. Insha Allah it will change you. Ilmu ni perlu didatangi, perlu dicari. Ulama' dulu travel so far for knowledge"