Habits obviously create the the body. Changing daily habits is very difficult tho, it requires a lot of energy and will power. But there are some tips and tricks such as for example, not removing things from the diet but adding things that will indirectly make you remove the "unhealthy things". I learned this cheat code working as a personal trainer. And also little steps make great difference too.
Anyways on theory is easy but, to get it in practice there are some checklists online that can help. I found this one to be the best one so far:
www.etsy.com/listing/1219190793/magical-checklist-10