People wanting to write every day while failing to do so always have two excuses: not enough time, and not enough ideas. It remains excuses: you can decide you want to do something bad enough and they will vanish. The only obstacle is you.
Time can be made. All you need to write 200 words is half an hour. If you're feeling particularly inspired ten minutes will be enough. It might take more time at first - when you just started developing the habit - but it eventually gets easier. Just force your way through. Replace TV time with writing time. Outline ideas while you eat. Sit down and be done with it, opportunities are everywhere.
What about your writer's block? Another excuse. Here is a list of writing prompts to never run out of ideas:
Document your day
Boring? Maybe it will, but you shouldn't care. Journaling is highly therapeutic, it will improve your mental health. It might even give you new ideas to make a better use of tomorrow. Daily routine might be boring to you, but it might fascinate people from a different part of the world.
Write fiction stories
Imagination is an unlimited manna. Throw in personal experiences and you obtain something both entertaining and didactic.
Explain things you learned
Non-fiction is always hard, because it demands clarity in both thoughts and words. However, there is one thing you must have skills for which is valuable to everyone. Share it!
If you don't feel like producing, consume! Write down notes from books you read, movies you watched, or courses you attended. Then build upon them to explain the concepts to your readers in a new way.
Write your Purpose
Explain what you stand for, how and why it impacts your work. Sharing your purpose is the only way to attract support. It's inspiring, and more importantly, it humanizes you.
Tell a personal story
We all have interesting stories to tell which actually happened. What about your childhood, lovers, friends, mistakes, successes? Putting yourself out there takes grit, but it's freeing.