Take the beam from your own eye first - before you start telling another what they should be working on, be sure you are dealing with your own stuff.
Don't give holy things to dogs or throw pearls before swine - don't waste time and energy where it won't be appreciated or valued. Answers are only heard by those who are asking the questions.
Do unto others as you would have others do unto you - is an explanation of how life works. When we are wanting what is highest and best for another we are also putting ourselves in alignment with what's highest and best for us.