If you don't believe in the project, that's fine, just sell and forget. I'm still hugely impressed by what the team has done, the accomplishments they've made, and the actions they've taken (particularly burning a huge number of coins - very rare in this sphere).
Price action does not matter. It only matters to you if you're a short term speculator/trader/pump and dump guy.
If you think the project has merit long term, it's a buying opportunity.