Today is the first day of the rest of your life. --- a quotation from the movie American Beauty.
That is more than saying Tomorrow is another day. Every day starts afresh, we are different, and be able to better ourselves from today on, cause it is the first day and a brand new day.
Out of this, I'd like to propose further: The improvement of life begins with that of yourself, which in turn begins with that of your thinking.
(Before I have said I hate poverty, now i want to add: I hate poor thinking more! )