The degree to which God strengthens you is based on two variables: the difficulty of your circumstances and your willingness to depend on Him for help.
Do not let any set of circumstances intimidate you. The more difficult your day, the more God will put His power at your disposal. Assess the difficulties ahead of you today, and then ask God for the strength needed to meet your challenges.
I pray also that the eyes of your heart may be enlightened in order that you may know the hope to which he has called you, the riches of his glorious inheritance in the saints, and his incomparably great power for us who believe. That power is like the working of his mighty strength.