1. I personally find it easier to work on things I'm passionate about. So I think you need some kind of motivation to keep you going. It could be that you want to show it to your friends, or it could be you dream the possibility of turning it into a business.
2. You mentioned that you'd like to learn a lot more on languages and frameworks. Presumably you need to actually do something relatively substantial with the language/framework to learn it to a reasonable level? So for me personally some of my personal project I did were purely for learning. I think that's another motivation that can keep you going.
3. You talk about finishing project. I don't know if any project can be "finished". So I think it's okay to recognize that you want to leave a project in a particular state and move on and not feel too bad about it.
2. You mentioned that you'd like to learn a lot more on languages and frameworks. Presumably you need to actually do something relatively substantial with the language/framework to learn it to a reasonable level? So for me personally some of my personal project I did were purely for learning. I think that's another motivation that can keep you going.
3. You talk about finishing project. I don't know if any project can be "finished". So I think it's okay to recognize that you want to leave a project in a particular state and move on and not feel too bad about it.