Your transaction has a fairly low transaction fee of ~47 satoshis/byte. The current recommended transaction fee is 180 satoshis/byte according to
https://bitcoinfees.21.co.
You have a few options here. You can wait and hope it confirms, wait for the transaction to be "forgotten" by the network, attempt a double spending transaction that pays a higher fee, or ask a miner to confirm it for you.
For the third option, we need to know what wallet software you are using.
For the fourth option, you can contact the users
Quickseller and
macbook-air.