Write down everything that inspires you
Instead of spending your life on your smartphone, why not buy a sketchbook where you can make instant sketches, if and when you have a good idea or where you also can write down about ideas and elaborate on them too, Sketchbooks are easy to find and they don’t cost all that much of a money. If you buy a few pencils and a good eraser and you also try to grasp some sketching know-how, you are pretty much done and ready to go.
Also, let’s add, that nothing is compulsory. Inspiration and motivation should come by itself, by you opening your eyes and look at the world as something you can get inspiration from in practically any street corner. Street and free time sketching can also help you a big deal in later specialization too. This way you can easily find out what you prefer to draw and it can also give you further ideas.