Focus on your WHY! Dig deep and think about WHY you want to be healthier. Is it too live longer, enjoy your kids, look good, be confident...the list goes on and on. What is the WHY that will make this the time you stick to it?!
From the girl who couldn't even bend my arms to do ONE pushup before committing to getting fit. I have gained so much strength! Keep at it and you can get there too..start modified and work your way UP!