At the start, everyone around you says: "Don't be afraid, try!" - but who will tell you what happens when you don't calculate the risks? Personally, a couple of years ago I lost 8 months and a decent amount of money, simply because I overestimated the demand. Now I advise everyone to be more sober. By the way, here is some useful material: minimalistfocus.net It doesn't suffocate you with "horror stories", but shows how to really approach risks strategically. The advice on mental traps is especially interesting - for example, the "illusion of uniqueness" and the "survivorship bias". If you are starting out, it is better to spend 10 minutes reading than 6 months correcting mistakes.