It doesn't matter how good a job we do as parents; if we don't protect our children's close circle, everything will be wasted.
There are many parents who are not doing their job, and our children shouldn't have to face the consequences. Therefore, we must do everything possible to prevent our children from associating with individuals who have bad habits, lack values, and lack direction in life.
One of my favorite books is The 48 Laws of Power by Robert Greene, and one of those laws states: "Avoid the losers." Although it's a harsh lesson, it is fundamental that we all follow it to prevent anyone from hindering our goals, which also applies to parenting.