Just about every modern editor and IDE these days highlights the line you’re currently on, which I find extremely helpful. Emacs doesn’t do this out-of-the-box, but provides the means to do so - the built-in global minor mode global-hl-line-mode. To take it out for a spin just add the following line to your Emacs config:

(global-hl-line-mode +1)

In case you don’t like the highlighting color you can change it by adjusting the value of the hl-line-face face. Most decent color themes pick a pretty good value for it, so normally you should not bother changing it manually.

global-hl-line-mode is enabled out-of-the-box in Prelude.