Random Lights?

I too have seen such lights and from what I have gleaned it has to do with your ability to see auras or yes the proverbial spirit energy. I usually have this experience when I am practicing some form of chakra exercise such as meditation or martial arts. Except the dots I see are usually blue or green.

A few nights ago, I saw a dot that was yellow. It just blinked and dissapeared.

They could be nature spirits. Very small orbs tend to be connected with tinier spirits. And the most common little spirits are the little people/fae folk. Bigger orbs (the size of a ping pong ball or tennis ball) are normal spirits. Even bigger orbs are higher beings. Orbs are really easy to catch with a digital camera, you should try taking pictures and see if you can get proof of them.

they are probably spirits who dont have enough energy to have full aperations or your not physic enough to see then in full

Stay away from artificial light if you can. If they stop, or lessen, then its the medical explanation.. in most cases. Also focussing too often on one spot forces development of tunnel vision, which can cause problems as well.