Lessons... 

Two stories to begin with:

1. Nokia refused Android
   
2. Yahoo refused Google

Lesson:

1. Take risks.
   
2. Embrace changes.
   
3. If you refuse to change with time, you might perish.

Two more stories:

1. Facebook takes over whatsapp and instagram.
   
2. Grab takes over Uber

Lesson:

1. Be so powerful that your competitors become your allies.
   
2. Reach the top position and then eliminate the competition.
   
3. Keep innovating.

Two More stories:

1. Colonel sanders founded KFC at the age of 65.
   
2. Jack Ma, who couldn't get job in KFC, founded Alibaba.

Lesson:

1. Age is just a number
   
2. Only those who keep trying succeeds

Last but not the least:

1. Lamborghini was founded as result of revenge of a tractor owner who was insulted by Enzo Ferrari, the founder of Ferrari

Lesson:

1. Never underestimate anyone, ever!!
   
2. Success is the best revenge.

Conclusion

• Just keep working hard.
  
• Invest your time wisely.
  
• Don't be afraid to fail