The word motivation can have different meaning from person to person. I will write here only what it means to me.
Motivation is nothing but the awakening of self confidence. I feel that nothing in the universe can motivate you except you, yourself.
In various social media platforms there are thousands of motivational videos.
Actually what they do? These videos acts as a catalysts which pushes your self confidence to a level in which you feel ready to take up any challenge.
Again, the main hero in this scenario is you. It is you who makes up your mind to push yourself outside your self made boundaries.
Remember friends, there is only one hero in our life and that is 'YOU'.