If you're just starting out running, I urge you to not push yourself to do too much at once. I like to do my running in intervals if it's been a long time since I've been in a groove. When I start back up, I usually set my running playlist up so that I have a good, relatively short, fast song to run to, followed by a slightly longer song that's more of a bop for a fast walk.
By doing this, I can run one song and walk the next, alternating back and forth. This gives me a little time to rest and catch my breath. Lately, while I'm still in intervals before I get to where I can run nonstop, I'm focusing on covering more distance — aka running faster — during my run songs.