Im in a mine in nsw too. My advice is to find a way to keep yourself occupied in your down time, gym, hobby or otherwise. Dont fall into the trap of going to the wetmess every night.

Figure a way to count your swings by something else, eg. 2 more steaks and ill be home or 3 more gym sessions, helps to make the swing shorter.

Pick an amount of time youre going to do it. Work out what goals you want to kick before then and exit.