Jody Hedlund guest posts on Rachelle Gardner's blog and gives excellent advice to all writers.
http://www.rachellegardner.com/2011/09/the-highs-and-lows-of-a-writers-life/
Betty Davis's line "Fasten your seat belts. It's going to be a bumpy ride." fits a writer's life. There will be ups and downs, highs, and lows, and emotions swinging like a pendulum. Not letting those extremes affect you are part of the road we travel.
