The glass of water

"The optimist see the glass half full.
The pessimist see the glass half empty.
The realistic knows that the glass is full; half of water and half of air.
But the opportunist drinks the water."

Stop analyzing if the things are good or bad. Just take the chances and opportunities to make things happen.

Smile!

Let your smile change the world, but don't let the world change your smile.
There's nothing much to say about this, but smile.
Never let that someone change your happiness. Ignore the irrelevant things that are around you, and do what makes you happy because that's why we live.

Enjoy the time you waste

"Time you enjoy wasting, was not wasting" - John Lennon

This is one of my favorites quotes when we talk about the time.
Usually, people are always complaining or criticizing the way you spend your time. Either if you are studying too much or wasting your time in "not productive things". "Stop wasting your time". That's the best situation to think about this quote.
Are you enjoying what you are doing? Do you really like it?
If you like what you are doing, and you enjoy it, then you are not wasting your time.
But remember not to bother anyone else with what you are doing.