It is referred as <span>zone of proximal development. The zone of proximal development enables a person to distinguish what he or she is capable of with help towards others and without it. It is somehow related to the given sentence above where it shows how children can do on their own and with the help of another person.</span>
<span>Psychosocial health is the result of complex interaction between a person's history and his or her thoughts about and interpretations of the past and what the past means to the present.</span>
The therapeutic value of a medication is called its efficacy.
A healthier way of reacting would be to congratulate your friend and be happy that they made the team. Support them and practice with them so you can try out for the team next year.