Power, strength and joy can be found in Jesus. Fill up your tank spending time with Him. Make Him the determining factor in your thinking and therefore in your life.
“Do not conform to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God’s will is—his good, pleasing and perfect will.” (Romans 12:2; NIV)
If you want to become strong, you need the right food
If you want to grow spiritually and become stronger, you need to eat the right strengthening food. The right food? That’s God’s Word, the Bible. Develop a plan to receive God’s power daily = read 30 minutes in the Bible daily. For example, read in the Gospel of John.