How long does it take to go from 100k to $1 million?

Could you please enlighten me on the time frame required for transforming an investment of 100k into a substantial million dollars? I'm particularly interested in understanding the various factors that might influence this transition, such as market fluctuations, investment strategies, or even personal risk tolerance. Could you also offer any insights into potential pitfalls or challenges that investors might encounter during this journey? I'm eager to learn more about this topic as I'm exploring ways to grow my own financial portfolio. Thank you for your time and expertise in this matter.