^ Great advice there.
For your first question, all about time management.
I table top here in the real world, and my group had a hard time keeping a regular schedule until we dedicated a day and meeting time. And you'd be surprised how much you can do by just setting a time to start.
I myself am very busy so I often have a certain amount of time I allow myself as well. However that could be potentially anxiety inducing for some people, but if you have a busy schedule in general, I find it to be useful.
On this:
Perhaps something to discuss, then, is how to deal with the disconnect between fantasizing about roleplaying and actually roleplaying. I find that the most eager and motivated part of me exists during the worldbuilding, character creation, and plot discussion phase, whereas I've just come to consider this dysphoria as a normal state of mind in any roleplay I participate in. I tend to pin the procrastinating tendencies on the actual writing activity, and not on a lack of interest in continuing a scene, because if it were the scene, then I'd wonder if I actually like roleplay at all! :O
I think I agree largely with Brovo.
Since joining Iwaku, and I'd still consider myself very new, I've seen a lot of people decide their entire character arc and interpersonal relationships in an ooc post and then not even be close actually playing the game. It's a pet peeve of mine even! lol But I won't hold it against you. Since you like making the parts of the game, perhaps use the game as a map to develop those things (characters, world, stories) to your end goal. The wonderful thing about games whether you a GM or a PC is the other players always throw in a wrench and nothing goes quite the way your plans were written. It's a great challenge to get to those end goals and organically develop the story around the game.
To reiterate what's already been said,
practice and self control. Telling a story, like any skill, is an applied skill. You can only get better by doing it :)