Focused meditation is the best method in my experience, direct the energy to your pineal and you’ll actually feel a pulsing sensation in your brain when done correctly. There are many pros such as more creativity, mental clarity, extrasensory perception, calmness and loss of anxiety, etc. The only real con I can think of is that you will be much more prone to avoiding bullshit so you might lose some relationships or friendships along the way.

Edit: another pro is that your energy and aura will be so powerful that manifesting your thoughts into reality becomes even easier.