Starting with 0 at 25 if you DCA 1K a month to 65 you will end up with $8.6M.
Heck you can even DCA until 45 and never invest again and you will still end up with $8.3M. Assuming 11% annual gains.
I believe in investing most people are their own worst enemy. The rolodex of choices like options, margins, leverage, covered calls, cash secured puts, CFDs, complex rebalancing, chasing the next hot stock, finding the next NVDA, the list goes on, all this are mostly rooted in greed, you want to beat the market and optimise for a few more percentage points, or just plain gamble for a big win.
If you just do the work for 10-15 years and stay put, the rest of your life your wealth will compound by itself. I've seen a chart where you're actually 25% to becoming millionaire at 100K and 54% to a millionaire at 300k. All because of compounding.