Getting more motivated

I often lurk on r/frugal and like how people help each other get things done. So maybe you all can help me with this. I've had a problem with motivation /self discipline all my life. But now it seems to be a more serious issue. With work I'm ok, having clients or colleagues that expect things from me keeps me focused. In my personal life it's another story, I kinda do the bare min to keep myself together , everything gets done late or half done or not done at all. I don't have a SO and I feel it will get worse as I get older. Any tips would be appreciated!