Tip #1 for Creating Energy in Your Vocals.
Set the Vibe: Record at Night, Room Lights, Candles, etc.
In order to get started with the recording process, try to set the mood and the vibes just right. Besides the technical aspects of recording, it is also important to feel fun, alive, and inspired; and a good atmosphere in your room is key to creating that. Recording at night, in a dimmer setting, and having some LED lights can be one option.