The thing is, if you wanna ensure that you can have a good early retirement you'll have to secure a stable financial lifestyle that will last for the rest of your life. If you only focus on the now and a few years ahead chances are you'll be finding yourself back to work in a few years when all your financial savings and investments are all used up. Hence, it is suggested to build or find a source of income that will be constantly providing you with all the financial needs you'll require.
You're absolutely right. Relying on income from a single source is highly risky when it comes to sustaining one's finances during retirement. This is especially true when that source is agriculture, where substantial risks can threaten income derived from the farming sector. We might encounter issues such as pest infestations, adverse weather conditions, or specific diseases that can render harvest earnings highly unstable.
For early retirement, below the age of 40, it's advisable to have several stable income streams to serve as benchmarks. Perhaps two or three businesses that can provide passive income or businesses that operate on autopilot. Moreover, you should have trustworthy individuals who can adapt the businesses to keep pace with the evolving times.
Retirement isn't merely a matter of timing; it necessitates thorough preparation to ensure a consistent income stream even when physical labor is no longer an option.