Showing emotions, displaying vulnerability and taking risk are all examples of living with an open heart.
Do it slowly - Don't take on too many risk as the failures can be overwhelming. Take one risk at a time and learn from the results.
Do it cautiously - Don't do it in public in front of everybody if you don't have to.
Do it wisely - Monitor, be patient and understand the situation.
But do do it - Once you have timed it right, just pull the trigger and accept the consequences. Good or bad results. Better to learn from your results than hide from life and love.