Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report, if there be any virtue and if there be any praise, think on these things. (Philippians 4:8)

Because what you think upon grows.

When you focus, even for a second, on

what you do not want,

what you do not have,

what someone else does have,

what is being kept from you,

or what is being taken from you,

you absolutely ensure that you receive more of the same.

For the opposite to be true,

to create more of what you do want in your life,

see the scripture above.