Maybe aviation isn't the industry for you? Both pilots and ATCOs are required to make difficult decisions under pressure, where a wrong decision could quite possibly end up in deaths. If you can't make a decision about the career path now, what will you do when you are in the hot seat and you have to decide to divert or press on? Send the aircraft on short final around or hope that an aircraft slow to vacate will clear in time?
By the sounds of it you have decided on a career as a pilot (heading to Aus) but then heard that you had to make some tough judgment calls in the job, and were wondering if its that same in ATC. Well the answer is yes. Both jobs can be very demanding, however both can also be very rewarding (and I am not talking in a monetary sense).
Apologies for sounding negative, however training to be either flight crew or a controller can be very expensive, and it would be a shame to train then throw it all away and do something else, or even worse, ending up at the business end of a big jet or at the top of a tower and hating every second of it. Find a career path you love, and you will never work a day in your life.