^{simulate this circuit – Schematic created using CircuitLab}

Hi there,

I have a question regarding the schematic shown above where I have 8 LED's connected in parallel each having a switch on itself. Since the supply voltage is 12 volts constant, there wouldn't be a problem of lighting all the LEDs at the same time. However, I assume if I want to light a single LED with this supply, I would probably burn it down. My question is how to handle this power problem (How can I adjust the circuit by adding different elements) if I want to light only a single LED or multiple ones with constant voltage supply. Thanks in advance.

^{simulate this circuit – Schematic created using CircuitLab}

I have a question regarding the schematic shown above where I have 8 LEDs connected in parallel, each having a switch. Since the supply voltage is 12 V constant, there wouldn't be a problem of lighting all the LEDs at the same time. 

However, I assume if I want to light a single LED with this supply, I would probably burn it. My question is how to handle this power problem (how can I adjust the circuit by adding different elements) if I want to light only a single LED or multiple ones with a constant voltage supply.