wisdom about problems

here is a little wisdom about problem's that i got from my father before he passed away. he said that a problem is an opportunity for growth and that once you learn the answer to a problem, it stops being a problem because you know how to solve it no matter how many times it rears its ugly head again. he told me this when i got depressed when overloaded by problems feeling self pity and just staying in the bad situation. i hope this help others like it helped me. i love you all.