Patience and discipline are essential attributes necessary for a successful investment. Any good investor needs to have these characteristics accompanied with a good practice that they can be consistent in.
Sustainability is far better than going over aggressive and investing beyond ones means. There’s no need to buy with more than your discretionary income because you’ll only be putting unnecessary pressure on yourself and your investment.
The problem is that people tends to underestimate the power of small growth or tiny growth, this growth may look ineffective or not reasonable but trust me if someone keep on doing that particular thing for a long period of time the result will be massive and it will look like overnight success. Using a huge amount money outside our discretionary is very wrong and sometimes people like to seek for validation but it is pointless because it's what you can not afford, you don't have the capacity.
People often underestimate the power of small but consistent investments. If someone had deposited just $5 a month in Bitcoin from their pocket money since 2017, their total investment in nine years would have been about $540, while if someone deposited $5 a week, it would have been about $2160, which the person would never have been able to invest all at once. So this example shows that it is not always necessary to have a large amount to start, but consistency and patience are important.
However, the actual value of Bitcoin will depend on the market price. It is not necessary to invest a large sum of money from the beginning to deposit in Bitcoin. The important thing is to develop a sustainable habit and maintain it over the long term. However, one should never compromise financial stability in order to maintain consistency. It is better to deposit Bitcoin gradually from your own extra money than to invest beyond your means and put yourself in unnecessary financial stress. Long-term success does not depend on how much money you invest today, but on how consistently you can maintain your strategy.