I want to be fit but it is the hardest thing to do, can someone give me a solution for this?

Learn the business:
www.amazon.com/Adelle-Davis/e/B001J3RULO
www.adelledavis.org/
cronometer.com/ (I haven't tried the software.)
www.charlesatlas.com/ An exercise plan that has been successful for over 80 years and requires no equipment.