1. Javed Khan: Javed Khan initially used bitcoin for easy money transfers. Seeing the price rise whenever he left bitcoin in his wallet, he started buying more during price dips. In 2020, he cashed in his profits and bought a Bentley.

2. Mr. Smith (pseudonym): Mr. Smith invested $3,000 in bitcoin in 2010, acquiring almost 20,000 bitcoins when the price was around 15 cents per bitcoin. He sold 4,000 bitcoins at different price points, making millions and quitting his job to travel luxuriously.

3. Daniel Crocker: Daniel Crocker made a small investment in bitcoin in 2012 while working at an IT company. He held onto his investment for eight years and sold enough to fund half the deposit for his house.

4. Jeremy Gardner: Jeremy Gardner fell in love with bitcoin early and founded The Blockchain Education Network. He made substantial investments in the cryptocurrency industry and shared a house with other successful crypto entrepreneurs.

5. Heather Delaney: Heather Delaney started with a small investment and built her bitcoin portfolio over time. She views bitcoin as a part of her pension plan, already seeing over a 500% increase in her investment.

6. Kane Ellis: Kane Ellis began mining bitcoin in 2010 and made a small, regrettable sale of bitcoins for a McDonald's meal. However, he later sold a portion of his holdings to buy a $200,000 Maserati.

7. Terry Proud: Terry Proud, a retiree, invested in cryptocurrencies through a self-managed super fund (SMSF). Despite the volatility, he's seen significant gains and can't help but smile at his successful investment.

8. Su Zhu and Kyle Davies: Former traders for Credit Suisse, they co-founded Three Arrows Capital and DeFiance Capital, managing significant cryptocurrency portfolios and becoming multi-millionaires.

9. James Saye: James Saye invested in bitcoin in 2017, saw substantial gains, and used the profits to fund a memorable holiday in Iceland.

10. Kristoffer Koch: Kristoffer accidentally invested in bitcoin in 2009 while researching encryption technology for his master's thesis. He later sold 1,000 bitcoins to buy an apartment.

11. Kingsley Advani: Kingsley Advani went all-in on bitcoin during the 2017 bull run, selling all his possessions to invest. His gamble paid off, and within months, he became a millionaire.

12. Erik Finman: Erik Finman made an early investment in bitcoin using $1,000 from his grandmother. He dropped out of high school, started a successful business, and became a bitcoin millionaire by age 17, avoiding traditional education.

These individuals have varied success stories, showcasing the potential to make life-changing profits through investing in bitcoin.