Why your optimism may be hindering your success...Sagittarius natives are some of the most optimistic people in the entire Zodiac. You've usually got a smile on your face, and have many friends because of your concern for others.
In the workplace, though, you may need to guard against being so optimistic that you inadvertently get passed over for promotions, perks and other benefits.
Sagittarius sometimes needs to take a page from Aries' book, and be a little more circumspect. Your open nature wants to share every idea you have with others.
But if someone else claims it as their own, it's tough to defend your position. Sometimes it's best to keep your ideas to yourself until just the right moment, for the right audience.