The photo captures a moment, the same blossoms in this picture have probably fallen off the tree and died by now. Not to be pessimistic,but just to point out that nothing lasts forever, and that nothing seems as good as it was, or as it is remembered.
Equally though, the best things in life are not things, or at least, not in the material sense. I'm not even sure the best things in life are moments, to be honest. Feelings are a more accurate description, I think the best moments in life are defined by the feelings we attach to them, rather than the events themselves, therefore buying an ice cream or getting a new job or getting the exam result we wanted can all be linked due to the feeling we get from it.
Although, just for the record, I prefer the "I-just-got-the-exams-results-I-wanted" to the "I-just-brought-an-ice cream" feeling, but I do love ice cream :p
I think this rant is my mind subconsciously telling me to get back to revision, and re-focus on the long-term benefit that this will have...when I actually do something...
"The amateur practises until he gets it right; the professional until he never gets it wrong".