The brain processes loneliness in the same exact place it processes pain, which explains a lot!! Some people need to move from one "love" to another quickly in order to not be lonely---not necessarily that they are in love. They are in love with the "idea" of being in love---big difference.
In pursuit of a goal or a dream, where you're feeling stressed or overcome with life's challenges, do either of the first two or both...BUT DO NOT EVER GIVE UP! It is in rising up to the challenges in your life that you conquer your inner being and become victorious.