The information in this article is out of date, and is only being retained for reference purposes. Please see the current version of this information here.
1. Enable Custom Nonce in advanced settings of your MetaMask wallet:
2. Send a new transaction. In the new transaction, you can send TO yourself, meaning your MetaMask public address. Then in the nonce set it to the last transaction nonce that is still pending:
and set gas higher(to what is recommended on https://ethgasstation.info/). ETH amount can be left at 0.