We all make mistakes. One very important life skill is to learn how to deal with them. Decide which one you want to embrace and take it with you to the next year, so that you remember not to repeat it again, and which one you'd like to leave behind and forget.
1. Gather all materials
2. On a biodegradable paper
3. Write about mistakes you would like to leave behind
4. And through them in a river or any body of water you have handy
5. On a regular paper, write mistakes you would like to hold on to and keep them in the envelope to open next year...