I think this is a really good skeleton of a poem...meaning that it's a good start and it could be great with a little more work. The subject matter is right on...never stop writing, no matter what anyone tells you, how they critique you, etc. Just learn from your mistakes and revel in the praise until you've honed your skills.
The main things that I see in this piece that could use a tiny bit of improvement are word choice and tempo. Writing a rhyming poem is very difficult, especially in the direct couplet style. You have to be careful to keep each of the lines "relatively" even in terms of syllable count or else the flow and beat gets choppy. A way you can help this is by looking at your adjectives and perhaps things of different words with different syllabic counts to replace them. Also, edit out all of the unnecessary words whenever possible. Overall, though, a great start and a nice read. Good job.