You have 100,000 and want to reach 1,000,000. There are actually only two ways to do it.

Either multiply your investment tenfold in one shot, or steadily triple it — the latter sounds slower, but most people who succeed tend to choose this path.
The first way is gambling; the second is rolling (compounding).
Gambling requires luck; rolling requires discipline. Most people only see the first option, and often, before luck even arrives, their principal is gone.
Here's a simple formula: Return = Principal × Volatility × Time.
With 100,000 principal, if you can achieve 100% annual return, you'll be close to a million in three years. It sounds doable, but the hard part is the “per year” part — meaning you can't suffer big losses, miss opportunities, or be swayed by emotions.
Many people always want to take shortcuts:
Either chase after volatile altcoins with wild swings, which can give 50% in a day but also risk being cut in half at any moment;
Or use high leverage, amplifying 5% fluctuations into 50% profits, forgetting that the risk is also magnified tenfold.
If you don't want to rely on luck or leverage, then the remaining reliable path is quite clear:
Choose coins based on research, not hype.
Identify genuine projects with solid fundamentals, ecosystems, and communities, rather than just trading symbols.