Making your life more meaningful

A saying goes:"the greatest use of life is to spend it for something that will outlast it." It is advisable that we would like to spend our life more meaningfully and not to waste it.
There is no better example than learning. Knowledge is infinite and our life is finite, but we can use our finite life to learn it. Neverthless, making the best use of our life and practising the knowledge what we learn before make it more useful. Socalizing is another example of what l think is meaningful. lt is fun to do some sports , have dinner or present the wedding together with my friends and family members. lf l see a photo or run across a condition like before, l will recall it and feel nice.
After all, making my life more meaningful is easy only to know what to do, why to do and how to do right now.

highlighted sentences - I wasn't entirely sure what you wanted to say..

I was initially confused by 'practising', interestinly enough it's British English.
http://www.future-perfect.co.uk/grammar-tip/is-it-practise-or-practice/ ;

Feel free to contact me if you want some explainations,

Chris