It's not always easy to set boundaries. How many times have you agreed to go out with your friends just so you don't spoil their fun, but you'd really rather stay home? We may have all done it at one point, but there are those who very naturally find it easy to set limits, say NO and be very clear with themselves and others.
Something like that comes with experience, but it comes very naturally to the 3 zodiac signs.
Taurus
Comfort-oriented, Tauruses don't have much trouble telling others that they'd rather stay in the comfort of their home than go out with them. They know their worth and are not afraid to accept their limits too easily.
They have no difficulty cutting off communication or a relationship if someone annoys them more than they need their energy.
Scorpio
Scorpios know how to maintain their delicate posture because they have a strong "shell" for this. Ruled by Pluto, the planet of taboos and secrets, a Scorpio will do anything to preserve and protect their privacy. They are the first to set boundaries because they can't stand listening to nonsense that they don't accept.
Aquarius
Being the air sign that they are, Aquarius takes their space very seriously and does not give second chances to those who have overdone it. They are famous for the ease with which they cut people out of their lives when they have not performed the deserving behavior.
Source: Bustle