I want to change

Hey all, I’m a 28(F) and welp… I’ve had a few shitty years just like everyone else. I lost my step dad to suicide 2 years ago. Leading up to that and since now I’ve been using alcohol to cope which I’m finally realizing. I want to change, I have to change, the thing is I’m too scared to tell anyone around me. I don’t want to hurt the people who love me or make them worry. How can I tackle this on my own and move forward? Thank you in advance I feel better just writing this.