Life just doesn't care about our aspirations, or sadness. It's often random, and it's often stupid and it's often completely unexpected, and the closures and the epiphanies and revelations we end up receiving from life, begrudgingly, rarely turn out to be the ones we thought.
I would give them (aspiring writers) the oldest advice in the craft: Read and write. Read a lot. Read new authors and established ones, read people whose work is in the same vein as yours and those whose genre is totally different. You've heard of chain-smokers. Writers, especially beginners, need to be chain-readers. And lastly, write every day. Write about things that get under your skin and keep you up at night.