It will depend on your content and context. 

The Airbrush with a nice pale colour might be useful.

I find another layer with a copy of the glow colours, blurred (Filter menu, Gaussian blur) and set to Add blending mode gives a nice glow, but I am happy with a crude cartoon-ish effect. Duplicate the Add layer for an intense effect.

Glow works best with enough dark surroundings to emphasise it.

Use Screen blending mode for a more delicate glow.

-Obtusity