Hi,
You've taken the first step by getting in the scales so well done. Whatever you do next won't be as hard as that!
The way I look at it is, you've got to shop, prep and cook anyway so it's not much of a stretch to think about what's going in.
I am not following a plan. I have done SW in the past and it works, but for a couple of reasons I haven't gone back there this time round (mainly I was rubbish at staying on plan if anything out of the ordinary popped up, and linked to that because you can have huge portions, if I went off plan, I went REALLY off plan as I was so hungry). What I'd say is, it's not the plan itself which is important but your motivation, honesty and keeping yourself accountable.
I'm doing low fat/low cal with a vague nod to SW principles (so a certain amount of fibre and dairy each day). I have a light breakfast and lunch, very few snacks and just whatever the family are eating of an evening - I find this gives me the flexibility to live, like if I'm out for a meal, or meeting a friend then I don't worry too much and just try and average it out with a very light next day. I've lost 16lbs in about 6 weeks (got a long way to go still!) and while there are faster ways of losing weight, I needed something which fits with my life or I'll fail
Something different might work for you - you might think you need to physically attend a weekly group for accountability, or you might be horrified at thought of no snacks (personally I find I spiral so I have tried to cut everything out except for if it's a special occasion or I'm socialising, or on occasion I've made myself have a snack if my calories are accidentally very low) so you might feel you need something with snacks built in.
Some lovely suggestions from @Makeupyourmind - I have a few go-to light meals if I'm struggling: scrambled eggs on rye/seeded toast, mackerel fillets, Cully & Sully fish chowder (really filling and nutritious but c400 cals), salad with loads of protein (boiled egg & chunk of cheese), omelette etc.
Whatever you do I agree with @Atalune - be honest about it! Plan in advance, or track everything you eat. Keeping a diary will help you establish what your triggers are too.
One other thing, be wary of wasting allowances/calories. For example, I've had cake since I've started, but not a single croissant because croissants are too light to waste the calories on! I'd sooner have a slice of carrot cake and feel like I've had something! I don't drink much alcohol but when I do it's a G&T rather than beer or wine. On the other hand, I've been reading Why We Eat (Too Much) and I've now sworn off low fat/low sugar things (and have tried to reduce processed food in general) eg I will have butter on my toast but be very careful about how much.