My age now is 26 and am addicted to this addiction and smoking weed. From now on I wll workout instead of fapping. Day 1 starts today.
You can do it. What steps are you taking beyond journaling? Meditating? Reading stuff like yourbrainonporn book? Getting off social media?
Well, if you want advice, you said that you want to give up both smoking weed and fapping/porn (which one is it, MO or porn?). I don't think it's wise to give up both addictions at once, I'd start with weed or porn and go from there.
Keep trying lakaf! One day at a time. We will be here waiting for your report and congratulating for making it 1 day, 2 days, 3 days... You can do it! Just for one day and then see from there.