If it has only been a year then perhaps stick it out a little longer? As Xeptu mentioned it may be hard to re-establish a position in the airlines down the track if you have a change of heart. Kids, schools, mortgages are themes I hear that change priorities away from flying quite readily and it would be a shame if you already burnt your bridges..
A couple of colleagues of mine fly lighties every now and then to get the buzz back and one even maintain a command instrument rating on a turboprop. Also leave without pay does present itself occasionally.. Good luck!