Life is tough and full of constant obstacles that you need to work through. Staying strong, energized and positive 100% of the time is extremely hard because you will have moments of fatigue, disappointment, doubt and even all of them at once as a result of the negative things that occur in our life.
Whenever this happens you must take some time off to just stop and reconnect with your "why". Meditation and prayer are very powerful tools that can assist in motivating you to continue pushing and to keep moving forward. Shut out all the noise from the outside world and all the distractions, and remind yourself of what your purpose is here on this world. Fact: Each and every single one of us possesses a talent or gift that needs to be brought out into the world. I will not lie to you, there will be challenges along the way that will make you want to give up but never ever, ever give up! Persistence is vital in achieving anything in your life and manifesting your true life's purpose.
I know it gets rough sometimes and you might actually feel like giving up. But instead just take a break; just get some rest. Sometimes you need that time to nurture yourself and spend time connecting with your soul again so that you can continue on. Trust me, take that break! You'll come back stronger and even more energized.