Every class and book on writing says write every day. A list, a line, a poem, a journal entry, a caption on an Instagram post. Write when you can, where you can. You'll often see writers scribbling in little journals they carry around with them. For me, it was the Notes section on my iPhone. This is how many of my short stories and poems first came to fruition.
4. Be gentle with yourself
I cannot emphasize this enough. Don't be hard on yourself if you skip a day, a week, a month. You are a writer and you came to it for a reason. Life happens and no matter what, writing will come back to you. It always does.
5. Don't write for anyone but yourself
This one's a vastly different opinion from some people I've met. I don't think you should cater your writing to a market. Sure, there are topics that are hot, genres that agents are looking for, but good writing is good writing, period. Just write. It's nice to see your name and story published but really, the most amazing writers I've met rarely write for fame. They write for the voices in their head - sometimes gently speaking and other times screaming - to get their story out into the world. Just write. Also, if people don't like it, are offended by it, think it's about them etc. do it anyway. Try not to hurt anyone's feelings I say, but if you do, apologize. And keep on writing.
6. You are not everyone's cup of tea