Only very few people happen to fall into this category. Thus you seem, however, to be quite special.

You may be a little ambivalent at times, unsure whether to trust your heart or your head since they both are very strong, but tell you to go into opposite directions.

Best for you would probably be to find / be with a person who makes you tremble inside and gives you that feeling of excitment when she / he is around, but at the same time you don't just want someone, you coincidently happen to care about much more than about other people. You want someone who can as well keep up with you on a mental level. They should have things in common with you and also when you think of them in a mere rational manner, you should be able to approve of your decision to commit to them.

There's no point in wasting your time on someone who drives you crazy (in a good way ;)) but keeps hurting you over and over again.

You need the right balance of emotions and reasoning... and as soon as you've found that you'll find nothing lacking anymore.

If you are already there ... lucky you. If not... keep it up! :p