In the realm of logic, "taking the bull by the horns" is a metaphor describing an alternative to two equally problematic choices when one finds himself "on the horns of a dilemma.
" Instead of choosing either of the two "horns," one takes the bull by both horns and "walks through the horns" to a third, less problematic, alternative.
Through the years, the association of the phrase with the circumstances of a dilemma has been freely abandoned.
This means make a decision in a difficult situation without any hesitation.
Taking the bull by the horns' suggests that you are not only making a decision but also doing so in a brave or bold way
Don't take the bull by the horns, take him by the tail; then you can let go when you want to.