Early retirement is bullshit for me, actually I'm stuck in this cycle.
I invest like 80% of my salary for many years, technically I can retire now because 4% of my investment is enough to cover my annual expenses. But, no one knows if I get sick in the future, my wife turn to be materialistic woman, school fees rise really high than 4% annually etc.
If I quit my current job and choose to the job that I want which likely earn bigger in the future, if I didn't make it, I will regret, at the same time I can't back to my old comfort job. Don't say take two jobs at the same time because the first job requires me to work for full time.
I agree. Saving up is a good thing but nobody knows what tomorrow will bring.
And furthermore an early retirement sounds dull. There need to be periods of rest and work in a person's life but only work or only rest is not the right way. Life means movement, only the dead don't move.
"Periods of rest and work". I like it. Much better than the idea of an early retirement is the one of a job you like (or at least you don't hate) and enough spare time to live a fulfilling life.
In addition, if the OP is worried about the long term viability of his plan and he won't rest because of the uncertainty about the future, then he should think about that first, because chances are that having so much spare time to think about things that could go wrong is not a good idea.