God has a plan for your writing. If you feel called to write, write. Write with excellence. Learn. Read. Study the craft. Honor God with your skill. Rest in God's agenda and His timing.
Your writing may be for you and for God to reveal a deeper understanding of Him and who are you are in Him. Your writing may be to share with family and friends. Your writing may be to share with a wide range of people. Write without expectations of what God will do and how He will use your writing.
Write for joy and with joy. Write for the glory of God.