The power of memories and expectations is such that for most human beings, the past and the future are not as real, but rather more real than the present.
Accept what life offers you and try to drink from every cup. All wines should be tasted; some should only be sipped, but with others, drink the whole bottle.
And that enquiring man John Synge comes next,
That dying chose the living world for text
And never could have rested in the tomb
But that, long travelling, he had come
Towards nightfall upon certain set apart
In a most desolate stony place.
Choose the mountain you want to climb: don't pay attention to what other people say, such as "that one's more beautiful" or "this one's easier". You'll be spending lots of energy and enthusiasm to reach your objective, so you're the only one responsible and you should be sure of what you're doing.