That's not really glowing tbh. What I'd do is play around with some setting in the "Dodge" tool. Can't remember which ones, but there's a dropdown menu that allows you to choose from 3. Play around with those.
^Sorry for being vague. I used a brush and then applied the Gaussian Blur on it. I increased it to a certain amount of pixels. Thanks for pointing out the dodge tool though. Would help immensely.
I mean glowing effects like the one in this sig pic. If it's not called glowing effects, feel free to tell me.