A writer’s work is the product of laziness, you see. A writer’s work essentially consists of taking his mind off things, of thinking about something else, of daydreaming, of not being in any hurry to go to sleep but to imagine something . . . And then comes the actual writing, and that’s his trade. That is, I don’t think the two things are incompatible. Besides, I think that when one is writing something that’s more or less good, one doesn’t feel it to be a chore; one feels it to be a form of amusement. A form of amusement that doesn’t exclude the use of intelligence, just as chess doesn’t exclude it, and chess is a game I’m very fond of and would like to know how to play — I’ve always been a poor chess player.
I want to write because I have to understand myself; I want to write because mostly, I want to deem myself as someone worthy of understanding.
I think what I did is what every writer does—once you have an idea, then you try to find a character who can manifest the idea for you. And then you have to spend a long time trying to get to know who those people are, who that character is. So you take what there is from whomever you know.
“Never try to convey your idea to the audience - it is a thankless and senseless task. Show them life, and they’ll find within themselves the means to assess and appreciate it.” ― Andrei Tarkovsky
Write what you know, write personally. You're an artist, but you're also a normal person, so chances are, if you've felt something, other people are going to have felt it too. You're not that special.