In the future (soon we all hope), you’ll have to talk in english about everything you talk in spanish, that’s why a good excercise is to watch movies without the subtitles, or at least try to understand movies without them, because in movies you can hear lots of different topics (assuming you don’t watch JUST tom cruise/julia roberts movies!), and more than topics, for a colloquial improving of your language, you can see lots of different daily situations, things you’ll have to talk or discuss about in future. At work it’s important to have a big arsenal of technical language, but in order to comunicate with the people you work, make contacts, or just have a good time in between work, you have to know how to manage yourself at work.
Yesterday I was watching this movie "before sunrise" by Richard Linklater, it’s in youtube (but I didn't watch there though), and it's good for this purpose because the characters talk about lots of different things. As an excercise you could try to understand this little fragment :