A few examples
- Chicken & Egg
- Supply & Demand
- Poverty & Illiteracy
- [some people] Success & Being motivated
- [few others] Success & Failure
- [few more] Diffidence & Failure
- Happiness & Helping others
- Happiness & Having fun
- Mistakes & Frustration
- Anger & Unhappiness
- Learning & Being Passionate
- Learn & Experience (oh, that's why they call "learning experience!?")
- A little different: Love & Marriage
- In relationships: Talking & (mis)understanding
- Friends & Celebrations
In many cases, it's very tough to halt the cycle, once it starts (be it positive or negative) - The key is to realize how & when to break (for negative) or feed (for positive) the cycle to make it favorable for us and others.