You are right, the kind of investment determines it. For some investments, one year could be enough to generate all the profits needed, for investments like real estate and even Bitcoin, you need up to 5 years and above to get the profit needed. No two investments are alike, that is why every prospective investor must understand all of these about their investments so they don't end up disappointing themselves with high expectations and unrealistic deadlines from their investments.

Alot of bitcoin investors who think that bitcoin is a waste of time had an unrealistic expectation of bitcoin. 5 years is good because by this time, they must have scaled through volatility and any other challenges that may have risen during the period of the investment.