Mars enters Gemini on March 30. This will do a lot to stoke the flames of a rivalry. Why? Because twins are siblings and sibling rivalries are the earliest form of competition. Everything you learned about winning, losing, thwarting and outwitting comes from those early years spent in the playpen battling with your sibling for Mom or Dad’s favor. All of this will come rushing back while Mars is in Gemini (March 30 to May 15). You can expect to lock horns with a competitor during this time but instead of a vicious takedown, you may discover that he’s actually your biggest supporter. Not only does he motivate you to try harder than you would on your own, but he’ll also tell you things your friends won’t. Friends tell you what you want to hear; a competitor tells you the things you need to hear. It’s one of life’s weird contradictions that an enemy can be a friend, but what else do you want from Mars in Gemini? Mars will always push you to be the best that you can be according to the sign that it’s in.