It's the very same as anything else! If you want to get into playing Music, Find what you cannot stop listening to because it makes you feel alive and captivates your soul, then emulate that. Deconstruct that. Reconstruct that. Abstract from it a little. Abstract from that yet further. Learn to talk about what makes it sound that way. Then, let's talk about what you like to play and why. It has to begin within. You must treat it like a plant if you want it to blossom. If you want to do it, you won't be able to stop yourself. You've gotta let it flow through you. It's got to originate within you.
Practice is time invested. Invest it wisely.
I've been telling some people something like this who've recently asked about how I went about getting into playing guitar as much as I do, and motivating myself to practice. I respond that the initiative is there if passion is, so you've gotta feel it. You've gotta want it. You've gotta let it come from within.