Reason, Season, Lifetime

I am starting to notice that people in my life have a purpose. And I’m perplexed as to why. Many people in a 12 step program say people are in my life for a reason, season, or lifetime I was curious about what that really meant.
When people come into my life for a reason, they come into my life to meet a need. A prayer that has been sent out and is being answered. They have something to teach me. And once that lesson is learned, they will leave me just as quickly. When that happens the need as been fulfilled.
When people come into my life for a season that means it’s my turn to share, love and grow. And I should get a great amount of joy from that relationship. But it comes to an end just like a season does. And then there’s a lifetime.
People that are in my life for a lifetime are there to teach me life lessons. And it’s my job to learn from them and accept the lesson.
What I’m still wondering about is why people come into my life and rub me the wrong way or annoy me. I do think that they are also there for a reason and I think they have sometime to teach me. And that lesson is many times hard fought. And very hard to see past the emotional reaction I have every time I see them. I think if I take a moment and breath and say why am I pissed I might get an answer. Many times I look at a person and say; “you have the qualities I hate in myself, that’s why I don’t like you. “ You’re my mirror making me look at my flaws.” I think if I understand why I are reacting, then I can move on to the lesson or the acceptance that Hp intended by putting that person in my life.