Even though most of us are honest when we state that we prefer to associate with people who are mostly like us, this attitude can give us comfort as well as conflict in our interactions with others.
One foundation of healthy and growing relationships comes when each of us understands and truly accepts that I cannot make another value/want what I want/value in a relationship.
Each of us has wants/needs/values when we make choices on the people with whom we interact.   Our lives with others tend to be easier when these factors are similar in type and degree.  There is no guarantee that life will be more interesting or safer if we associate with similar persons, but the odds are that it will be easier to handle.
How many parents have grieved when they discovered that their children wanted or valued something different from their parents?
Many counselor offices are full of people who want an important person in their lives (usually a spouse, friend or family member) to change to having similar attitudes and behaviors   
How frustrating it can be for each of us to confront the realization that some of the people who we love and care about actually value and/or want something different in their relationship with us!  Why can't they be like me?  Our lives would be so much easier if those around me behaved like me.
One of the realities in human behavior is that people choose to give only what they are able and willing to give in relationships.  There two important words (able/willing) present in that sentence complete our behavior of choice.  Healthy understanding of relationships encourages us to note these concepts of ability and willingness when we engage in behaviors and attitudes with other people.
First, each of us is confronted with what we are able to give in relating to other people.   We may want to value something that is important to another person but we may not be able for a variety of reasons such as our personal experiences and history.  When this choice becomes apparent to others, some may choose not to have a relationship.
Second, we may be able to give to others what they value, but we may also choose not to give because we are not willing, regardless of whether we are able.  Each of us is continually facing the personal choices of our ability and willingness to give or not give.   Our choices of the price we are able and willing to pay will usually affect what type of relationships we have with people.  One can count on the reality that there will be some type/amount of price to be paid by each person in a relationship.
Even when we are able and willing to want/value in a similar manner for ourselves in relating to another, we may encounter the frustration that the other person has different wants and values in their manner of relating.  Oh, how we often want to change them to see a situation, feel, think, behave, believe to how we see that situation!  And, we ask: why can't they see reality like I do?
If I am healthy, I am realistic in realizing that I cannot make anyone value/want what I want/value in a relationship.  I accept the reality that the people in my world choose to give me only what they are able and/or willing to give me.  And, I do the same in return.
With this realization as a solid foundation, a positive and healthy relationship has the possibility of being formed and maintained.
I can then understand and accept that much of the time during my Life Journey, I do not have to change friends, IF I understand and am comfortable that my friends and I are both changing.  We all will encounter change and make continual choices on how we each wish to manage it in others and ourselves.