Of course you have to believe it. You see it as a target set of conditions which you KNOW you have the ability to achieve.
It's "I will"

The only proviso is keeping it practical. A big change may take a long time.

As for a government agency (or anything else) being after you, rationalising it may help...well, a little. Paranoia is sometimes wiser than being a fool. Ask yourself if you've done anything to draw the attention of an agency to you. Or do you fear for the future? Like a change of agency policy might bring you into the spotlight?