In life, our aim should be to untangle ourselves from situations that are not pleasant. Situations and people who try to pull us down, shouldn't be encouraged at all. Farther you stay away from it, the better will be it be.
But at times, we do not know who or what these situations will be. And, even if we come across, will we be able to recognize them? Now, that is a million dollar question. When we come across a situation and with time we realize that this is not going to remain healthy, we should slither away from it. Never try to get involved with people who make our life miserable. The more we involve, the more tangled we get in life. And from there on, it is just downhill.
Always, learn to understand unpleasant situations and sense negative people. Our goal is to remain UNTANGLED!