This morning I saw two posts in my RSS feed, both about speeding up your Mac if you think it is running slow.
Post #1 from Cult of Mac (Wired) was terrible and useless. Post #2 from The Next Web was slightly better, but still not all that great, especially for savvy Mac users.
So I submit to you the main reason your Mac is running slow: you don’t have an SSD hard drive.
Yes it is that simple.
Get this one (highly recommended) or if you are more budget conscience I hear these offer a great compromise(I have never tested one though).
Once you go SSD you don’t go back.