If you can keep your income down to a low level you can effectively pay zero tax up to $18500 in one financial year. (I believe the government is rumored to increase this to 20k within the next few years which is good news for low income earners).
My situation: I have an investment property which is 100% positive and earns about $15k per year clear. I also work full time on an average wage of $50k per year. I really don't like my job very much and find I'm paying too much tax at the end of the year. Basically, I feel like I'm working to pay the tax man and it isn't fun.
I'm very good at keeping my expenses low and don't need much money to live off. Most of what I earn just goes into savings. My biggest expense is maintaining a vehicle but I am also considering disposing of it and using alternative means of transport. There are many ways to keep overheads low but I don't want to stray off topic.
Maybe I will quit my job and travel or find a part time/casual job and enjoy more leisure time and less working hours. I won't be able to save much money but the extra leisure/free time to pursue other things in life might be more worthwhile than a repetitive, meaningless 9 to 5 job. Unfortunately part time work and other so-called "flexible working arrangements" are far less accommodated in the private sector unless you are pregnant/breeding/have kids.
Or the fisherman he feels so much stress/pressure to work excessive hours chasing the elusive dollar that he drops dead from a heart attack within the next 20 years