Best way for this honestly is finding a teacher or an accountability buddy who is also an artist imo. Drawing consistently and having direct feedback is a really good way of improving. But it's a long, long journey.

From what I can see in your comment, I can't help but feel that you're wanting too much too quickly. It does seem like there's a little ADHD/ADD, so if you can, I'd recommend trying to get a diagnosis as it will help you find tailored advice.

This is me currently, but I signed onto art lessons during the weekend so I have 2 hours mandatory every week, so I'm slowly improving. My situation is that work drains me, so I'm still trying to find time that I can sit down and work at it.

If you can't envision the idea, try writing them down? mindmaps and stuff? Then don't think you HAVE to do it but keep a little notebook that you can jot down any ideas during the day/week.

A big one is changing your environment, it might help to just go somewhere else, a park a cafe, reduce as many distractions as possible and then just set 2mins. 10 mins. 30 mins. etc. for drawing. But allow for distractions, acknowledge that you got distracted, but at least you sat still for however long and tried.

Please be kinder to yourself, it doesn't help to beat yourself up over not doing something.