Michael Strahan is renowned for his motivational posts on social media, and his latest one got quite the reaction!MORE: Michael Strahan pays heartfelt tribute to Robin Roberts on special dayThe Good Morning America star took to Instagram on Wednesday to share a powerful message to motivate people to achieve their goals.He wrote: "Grit, desire, and discipline are free and are the only equipment you need to start just about any endeavour you'll set out to do." VIDEO: GMA's Michael Strahan opens up