It’s a job. It’s not a hobby. You don’t write the way you build a model airplane. You have to sit down and work, to schedule your time and stick to it. Even if it’s just for an hour or so each day, you have to get a babysitter and make the time. If you’re going to make writing succeed you have to approach it as a job.
Happy are they who don't doubt themselves and whose pens fly across the page. I myself hesitate, I falter, I become angry and fearful, my drive diminishes as my taste improves, and I brood more over an ill-suited word than I rejoice over a well-proportioned paragraph.
I would recommend the cultivation of extreme indifference to both praise and blame because praise will lead you to vanity, and blame will lead you to self-pity, and both are bad for writers.