An experiment of life

I have a headache...
For listening to how I went wrong,
How I should have done better,
And how I have been slacking.
I am getting sick...
For hearing how I am a waist of time,
How I am a waste of money,
And I how I am so useless in your life!
Yes in your life I have no use,
but in mine I am the most useful.
And as the next year starts,
You will start this mess again,
how I am useless and a waste of money.
But next year I will differ.
I will not let you talk down.
I differ.
I am young.
I will differ.
But I was born live.
So why should I look down the cliff right before I jump?