Have you always had round nails? Or Square?
I used to have round nails till about 7-8 years ago. Then once a manicurist made them square for me. Thats it I never looked back. Its waay more easy to maintain square nails than round.
At first I used to have trouble filing them square and making sure the edge was a straight line.
Till I read this somewhere that it easy to cut nails with a scissor.
Now it barely take me 5 mins to re-size and re-shape my nails.
If you have round nails I suggest you let them grow out till side edges are straight with the nail bed.
Take a scissor, place the lower end against the tip of your finger, keep it parallel to the nail base line and cut.
After you cut with scissor, this is how your nails will look.
The edges and corners will be really sharp. So here's what you need to do.
Lightly file down at 45 degrees against the edge of the nail. File in one direction, lifting your file back and placing it at the top, not rubbing it up and down. You only need to file lightly, say 3-4 strokes (light) so that the edges of your nail are sealed.
This will help against peeling and cracking from the edges. Dont file the nail down, you want to maintain the straight line formed by the scissor.
Now file at the corners to make them blunt. Again file in one direction for each corner. A few strokes should do it.
Do you already do this or use another method to make your nails square? I'd like to know.