The Internet is full of success stories of millionaires who started from nothing. It's so natural to want to copy them, follow their advice, replicate their actions... hoping that we may succeed in the same way. Vision is like hyperspace for Skywalker: a way to reach your far-sighted aim no matter what! Cut and paste formulas only enrich those who sell them. Success is linked to a large extent to luck (being in the right place at the right time) and most importantly to the inner voice of those who made thing move their way. Following overused concepts sold by random influencers is more likely to sidetrack and distract you. It's hard enough to keep track of your own product roadmap: follow your own learnings and your vision no matter what. But that's what pays off in the long run!
Unless you have a regular source of income that covers all of your product development spendings, you'll have to continuously make sure you don't overspend. This has hard consequences: postpone work that isn't top priority, be frugal when dealing with salaries, focus on revenue growth instead of quality. Bootstrapping a startup requires to make hard choices to preserve your cashflow! Cashflow is king for most startups: even if you hand team problems skilfully, maintain a upbeat pace compared to competitors, money problems are still able to kill your business relatively quickly. One way of handling this is to have several regular revenue streams that make it possible to invest in building a quality product over time even if you don't get any funding. Stable resources are the key to a sustainable product roadmap!