People who think they're better than everyone else,

 are people who don't know themselves very well:

For the person you should try to be better than daily is yourself. 

Yes,

Only compare yourself with yourself   -

 do this and you'll do well.

Try to make your tomorrow you

 a version of you that's new and improved. 

Your value and your worth

should not be found by comparing yourself 

 with others on this earth  -

for your true value, you see,

comes only from the blood shed at Calvary.