This can be modeled by parents who bottle up feelings or give the child to much recognition for being strong.  Or the child who has parented in the family way to early and taken responsibility for other feelings.  For the male gender it can be passed down in society “big boys don’t cry” ” Be a Brave Soldier”, The family system who fear feelings can put down messages of “don’t feel sad”, “don’t experience fear”.  This can mean individuals overide their natural resources and keep functioning well beyond what is good for them.  I see this a lot in workaholics and matriarch heads of families and organisations.  It can be the source of some sever problems in adulhood.  This is from finding dysfunctional ways to sooth feelings that you don’t even know you have underneath.  To great walls of denial and not living in a real way.  I worked with someone whose denial was so high that on a psychological test she was really showing significant levels of splitting off from herself completely.  When her mother died she did not grieve with tears or deal with her death in a real sense but hid behind her defences.  It was only with working on these issues that she was able to access the child within that made the decision that feelings were not safe. You can see these processes with those that compensate by vanity, materalism, hedonism and running away and creating new lives  and images all the time.  To eating disorders and people carrying their pounds of pain in weight .  Or not eating because they get confused by the primal need of being hungry and act out the emotional deficit by lack of food.  It is very difficult to get your needs met when you don’t have the primary source of data which is emotions to let you know where you are.  It is like functioning in a half human way and having a closed heart to self and others.