It's so hard to stay focused on you when you work 2 jobs and have 4 kids plus a terrible back! But its even worse when you have no support! I have to learn to be my own support!
It is only as hard as you make it.
I work. I have two kids, a husband and a house to deal with. Plus, a random few problems that like to pop up from time to time. I had no support to start and didn't even think to ask. I just did. Set my mind on my goal and haven't looked back since. I've slipped up and fallen downhill quite a few times but baby steps before you can manage this big ones.
Do it for you. Don't worry about everyone else. They will eventually see it makes you happy to work out and get in shape.
Find your goals. List them. Find visual aids if that helps you. Find the people on here busting their butt daily to reach goals, and just in general live a healthier lifestyle.
Leave no room to make an excuse.