The axis box does not show up and the brush does not light up when selected. no idea what i did, i was just making a room, radiant froze for a second now i cant see what i have selected.... help?

If you haven't found a solution yet, you could try resetting your Radiant preferences. This is done by pressing 'P', then navigating to system and clicking "Reset Preferences to default".

If it may helpanybody, the shortcuts for displaying green selection is SHIFT + J, and for displaying whites outines it's J.