If you want to look your best then you'll probably spend a fair bit of time in the bathroom, but unless you have decent bathroom lighting you may not be seeing yourself in the best light.
Now consider your bathroom space. You can try drawing the layout on a piece of paper. Indicate the natural light sources, such as your window and start putting ideas on the paper. Consider the various kinds of lamps available today, and where you can put them in the room. Have a main source installed. You can use this at night when natural daylight is absent. Next would be your secondary source, for your accent lighting. These are the bulbs that you can also use during the day to tie the lighting of the room together.
It is wise to use flush-mounted ceiling fixtures, owing to the fact that these come with bulbs that are enclosed by a kind of cover. The cover is essential as it acts somewhat like a lamp shade and helps in diffusing the light as well as protecting hot bulbs from breaking and cracking from contact with water vapor. The best would be to have the right balance of ambient bathroom lighting and task bathroom lighting. This will give your bathroom proper illumination and make your bathroom experience worthwhile.
Try accent lighting for illuminating your bathroom as it accentuates the lighting in your bathroom. This lighting option is not a necessity, but can be used for creating a decorative and dramatic look for your bathroom.