Student or Learner
The following in bold is confusing. Please explain it more easily.
Express you feelings. This means, first and foremost, expressing them to yourself when you know that they are negative and potentially destructive. Learn how to release your negagtivity in private, and be diligent about it. Don't let anger and resentment linger just because you have walked away. Unless you actively acknowledge and release them, they will build up and fester.
It's not the same to me. It will obviously take place after you have walked away, but the text talks about dealing with the cause and not the time, so make sure that when you walk, you don't leave a lot of negativity about having left- leave and deal with the negativity or else it will grow and get worse.