Ultimate Lack of Discipline

I noticed that despite all my resolutions and intentions, I am still not much better than when I attempted to change. Therefore, I ask the following: What could a person particularly lazy and unmotivated, who cannot stick with things long term, and who only has good intentions *do* in the short term to get out of their situation? I'm asking about any tiny step, initiative, or behavioural change that could help. I tried exercise, meditation, dietary change, stopping social media, etc. but all, in the *long term* have failed. Thank you.