I guess sometime or the other , in life, you are going to have to come to terms with the fact that

You are not going to read all the books you want to.

You are not going to meet all the people you want to.

You are not going to buy all the things you would rather have.

You are not going to visit all the places you had like to see.

You are not going to indulge in all the activities you aspire to.

You are not going to get to try out all the careers you would like to.

But in spite of all these shortcomings, you can decide which of the chosen very few of the above categories would bring you optimum happiness when you face your own mortality, at the end of it all.

Like in all things, life is about optimising happiness, not perfecting it. Because there  is no such thing as ‘being perfectly happy’.