Line breaks

I am completely at my wits end. I have tried <p>content</p>,  ,
, but nothing works.

Everytime wordpress strips it out my line break. incredibly crushing when I keep trying and it almost seems to have a resolve and intent to thwart my intentions. This would make an EXCELLENT torture technique for those of you into that.

On this post for example:
http://www.kitchenblossom.com/breville-juice-fountain-crush-vs-hurom-slow-juicer/

I’ve tried my hardest to get this line break to stick here: screenshot: http://screencast.com/t/ncUuAfWqU

and here. (This font is created with a short code so it’s two shortcodes and I can’t seem to put a line break between them [shortcode]content[/shortcode] BREAK!!! [shortcode]content[/shortcode]
screenshot:http://screencast.com/t/tzZcbU4k1H