Answer 1

Well I code for money so I print out a picture of a car I want, or a trip, or something and keep it in my pocket. Everytime I get stuck I look at it and get motivated to work harder.
Coding can be hard, so take a break every hour or so. Never give up. If you want to make money, get a picture of something you need/want. If it is a hobby then look at other succesful apps and their source code on github and it should motivate you to work for it!
Hope this helps and if you have any other questions don't be afraid to ask!