I don't know anymore

Where does the sun get it's power from, the strength it need to rise every single morning? 
How does stars blink and shine, when everything else looks so dark? 
Where are the rainbow getting all his colours from? 
How do you keep breathing when there's no more air? 
Why are the past, a part of the present? 
How do you expect to feel no pain, when your fighting the truth? 
Why do we hold on to the past, when we should be looking for the future? 
How do you think others see you, when you don't even know how you see yourself? 
Why are you complaining, when you know you are okai? 
However, the future are not written, the past is by you, make up your mind, do it now!