I went through a little depression, felt lonely, overwhelmed, and completely unproductive when I left work to take care of our son. My husband tried to be supportive and understanding, but how can one really understand without going through it personally? I had huge goals for our marriage and as a parent, but having never even witnessed what I wanted, it was that much more difficult to figure out at the beginning. Now we're in a good place and things seem like they're moving forward. For us, routine is key...with some fun stuff in between.
The way I do it is Mon, Wed, and Fri I am "all mom": we spend time doing cool activities, lots of dancing, lots of reading, picnics, little trips to a park or something, and on Wednesdays we go to Gymboree so that I can talk to other moms at the same time I'm playing with my son. Tues, Thurs, and Sat I'm still mom, but those are days when I take advantage of things that can keep him occupied and I do all the business for the household: bills, shopping, laundry, and cooking meals for at least 2 days while I'm in there is a biggie. I might have one meal going in the crockpot, one in the oven to freeze for later in the week, and something going on the stove in preparation for that night.
If you list what "chores" need to be done that week, then divide those chores into 3 days (except your basic daily stuff like making the bed, etc), then you can schedule your days a little better. Get up a little earlier than your children if you can and make the bed, get the laundry going, pick up the basic clutter and then you'll have a few things done before breakfast time. I just started viewing mother/wife roles as my job and tackled it accordingly....with a dayplanner, lol. It sounds a little anal, and it does take a couple weeks to get it down, but now our days run smoothly. My husband doesn't think I'm forgetting or neglecting him, I don't have to search for a place to sit down, and my son is happy and has weekly "adventures" to keep him growing.
After I got this down pat, I added Sunday to the mix: we get up and my husband makes a nice breakfast, we go to church together, and then after church I go to work at Babies R Us (partly for the discount, partly for the adult contact, and mostly to get away from being a mom or wife for 1 day/week). My husband takes our son that day and does guy stuff: he may read, watch a soccer game, or go to the park, but it's good for both of us. Good luck finding your own groove. Hope this at least gave you some ideas.