I love Waking Up. It's Sam Harris walking you through how to do it in a practical way.
I'll admit that until I tried it, I thought meditating was either just sitting there trying there trying to think no thoughts or it had some sort of religious connection that just wasn't for me. After using it for months, I realized it's a way to be present, acknowledge that thoughts are things that merely arise, and most of all, things that you can discard instead of letting them impact you.
I started trying it when he said that he'll do it for 30 seconds just standing in line at Starbucks if he feels some sort of anxiety, or before he goes on stage. That kind of thing felt practical to me, so I gave it a go. I've used the app on and off for over a year, often starting from the first guided session from scratch and working back through them when I lose the habit.
I don't do the guided sessions anymore, mostly listen to the interviews in the app that you point out. But I meditate in the morning almost every day now, and right after, I try to think of the person I want to be, and then I start my day. I got that tip from Eben Pagan (of David DeAngelo dating advice fame) after realizing I usually just wake up and am the person that I feel like, like sometimes I'd wake up and feel low confidence, and I would kinda be a low confidence person all day. Meanwhile, all I had to do was simply decide to take another path.
I dismissed all of this kind of stuff as BS for most of my life. I was 30 when I finally tried Waking Up and I finally see that there's something practical behind these things.