I am ashamed of myself for being lazy and not going to the gym, I am not sure why I struggle with it
Same.. for me its because i work so much, and being a parent is so draining for me... i bought a new machine tho im going to start working out on friday. Try to find out whats causing it for you, and take 1 step to fix it you got this! 
That is what I will try, I just keep making excuses
One tiny baby step in the right direction and everything else will fall together piece by piece!!! 