• Bring is a verb that means to carry something toward the speaker. 
• Take is a verb that means to carry something away from the speaker or to a place where the speaker is not located.

For example:

• Don’t forget to bring some snacks to the party!
  • I am hosting the party and I want you to bring snacks to my house. The snacks are headed toward me.
• I mustn’t forget to take some stacks to Mark’s party, thought Misa.
  • Misa is Mark’s friend.  The snacks will go away from where she is. 

While this is the most common use of these phrases, even native speakers mix them up! It’s a very common question! 
Source: https://www.really-learn-english.com/bring-vs-take.html