I have also heard that the child you have the most conflict with is often the one that is most like you. Have you ever noticed that two notes on an instrument that are right next to each other sound horrible? Fortunately, in the family it doesn't have to be that way. Those same two clashing notes when played alternately with other notes can sound beautiful.
So, think about yourself, even take a personality test and honestly look at your strengths and weaknesses. Focus on the strengths, but don't ignore the weaknesses. You can predict what the problems in your family are going to be and avoid them when you see them coming.
There are lots of free personality tests available on the internet that can be taken in a few minutes. Some are better than others and some will be more detailed than others, but you can simply search for 'free personality test' and several should come up at the top of the list. The best ones I have found are based on choosing one of 3-4 words that you feel describes you best and then tabulating the results into 4 different categories of personality.
Give it a try. I did three this morning and put the link to the best one of them below. It comes with 7 pages of explanation and you can print a 1-page report. It was far more professional and accurate than the other 2 I tried. They try to sell you a report pack, but you can look at a free report.