This is where I get to brag, so forgive the boastful language below. To counter this, be sure to look at my weaknesses. It's a far more interesting list.
One of my biggest strengths is a strong sense of optimism, which I consider a superpower. It can get you out of situations that are otherwise death traps -- that's a true superpower. It's at the top of my list because I think it's the most important strength I have. Even in the face of a deep recession or industry upheaval, there is always opportunity for good and for growth. At the very least, every day is an chance to impact others in a positive way, which will always pay back and pay back well.
I'm a hyper creative, always able to look at a situation from multiple angles. I'm not afraid to try new things, and often have a bias against 'the way things have always been done.' Systems are meant to be questioned, and especially in jobs such as sales it's far more important to ask why than simply do as your peers do. Combining with the optimism listed above has allowed many doors to open for me. Being creative meant for years I was often alone in my opinions, but once I found a job in which I could express creative thoughts (and they were not only appreciated but encouraged) I felt like I grew 20 years in mental development in about 36 months. If you are a creative, my number one advice is to work with and around other creatives ... the rest of the world might not understand you but your core peers will.
I'm good at finding solutions to problems, especially in the world of sales and marketing. Much of this success comes as a combination of the two things listed above. When I look at an old situation in a new way, along with being optimistic about the future, then I've got an edge up on those around me.
I'm good at intuitive math and I can rock a spreadsheet, which when combined with the three things listed above multiplies the influence of everything. By "intuitive math" I mean taking human situations and finding numerical derivatives that can be applied, along with finding the one or two key metrics to follow ("intuitive math" is a term of my own creation). People that think their lives or work have no measurables are wrong, they simply need to be defined. That's my opinion anyway.
My last strength that I want to list is one of the most important: the ability to say no. When it comes to work to be done, the last thing a person should have is the distraction of projects brought piled on endlessly around them (or the social distraction of being in situations you really don't want to be in). I'm good at saying no to things that will get in my way or distract me. I have little to no patience for work that is not helping to progress to a final goal in an efficient way. I have little to no patience with people that insist on fussy busy work without questioning the value of it. Most importantly, I have absolutely zero tolerance for people that think time equals progress. A hyper efficient four hour day of work followed by a couple hours of thinking, creating, and going for a walk is far better than a twelve hour workathon at the desk. As long as goals are met and progress is made toward a larger set of markers, then a person is doing what they should do.