One of the great things about planning (apart from making your life easier) is that you have an excuse to indulge your stationery fetish. I love stationery and I love lists.
I think that getting my life organised is going to be a fairly long-term project but that's fine, some trial and error is inevitable and it's important to set up systems that work.
There are loads of planners, lists and journals in the high-street shops and they can be bought quite cheaply. My haul cost just under £10 from B&M and The Works and the journal was £4. That's my weekly ten pound (plus a little extra) treat well spent I think!