I find the investment in writing is like developing an athlete. You need to find experts, lay out a training plan, run with others, get advice and help from others, and continue to pace and develop your skills. Writing is like running.
The SCBWI conferences, intensives, meetings. and critique groups are my writing marathon training plan. There is an event for every level of need in your development plan. http://sfnortheastbay.scbwi.org/
For my running, I’m a member of San Francisco Road Runners Club. And it’s only with commitment to both writing and running that I will see improvement.
Why should writing be any different than any other athletic sport?