One thing that helps me if I want to get something done to put myself in a situation where that's the only thing to do. Like if I wanted to work on writing I would turn the modem off and/or disconnect wifi so I wouldn't have internet and it's just me and my word document, or if I wanted to read some of my book I'll crawl under my bed with just my glasses and the book. I think somehow adding structure to your day is a great idea. Are you still exercising? That's a good start.