One mentality that really helped me is to not view the languages and frontend/backend as being distinctly different. It may seem weird in theory but actually, it's very helpful. I found that when I no longer viewed any computer programming as "different" I was able to soak up all the information as if all programming was just one big giant language.... And it kinda is. The separation occurs in the mind and if you convince your mind that all this stuff is actually related and it's essentially all the same (it really is in the end), it can take the burden and overwhelm off of your shoulders.