difference between influence and affect

influence - (нөлөөлөх, нөлөөлөл үзүүлэх)influence = have the power to change or alter something
1 to have an effect on the way that someone behaves or thinks, especially by giving them an example to follow
influence someone/something
       ---- I don't want to influence you. It needs to be your own decision.
affect - (нөлөөлөл учруулах)affect means to cause a change in someone or something, or to change the situation they are in. Affected means "influenced or touched by an external factor."
1 [often passive]to produce a change in someone or something
affect someone/something
      ---- Your opinion will not affect my decision.
2 [often passive] to make someone have strong feelings of sadness, anger, etc.
affect someone
       --- They were deeply affected by the news of her death.

difference between influence and affect

• influence = have the power to change or alter something
  He influenced the future of the company when he launched the new product.
  
  effect = cause something to happen
  She effected the change of programme after arguing that it was essential.

• Influenced means "having the character, development, or behavior changed by something or somebody."
  Affected means "influenced or touched by an external factor."
  Affected doesn't seem to have a negative connotation (and in most the cases it is considered synonym of influenced), except in sentences like "the gesture appeared both affected and stagy." In such sentences, affected means "artificial, pretentious, and designed to impress."

• influence means to have an effect on the way someone or something develops, behaves or thinks.
  i don't want to influence your decision so i'll keep my opinion for myself.
  affect means to cause a change in someone or something, or to change the situation they are in.
  smoking affects the lungs badly.                                                                                 

•  I feel like "affected" as a slightly negative connotation whereas "influence" can go either way.
  In the following sentence (made up for the occasion) ...                                                             You will find that affect has several other negative meanings:
  • "He seems to be very affected by his loss."
  • "He is affected by Alzheimer's Disease"  
  In other words your opinion will not be influenced by the fact that "influence" is usually positive or usually negative ;-)
  Arguably though, "influential" has a slightly positive orientation.
  • "Philosophers like Voltaire were influential in the Age of Enlightenment".