Does time really heal all?

I thought I was getting over it. It’s been 3 weeks and we have only talked a handful of times. I don’t think it hurts as much as it used to. I know it was right ending things but I just miss having that person there. I hate that I torture myself and wonder if he misses me. I wonder how this is so easy for him. I haven’t given in and text or called him all week. How long until I’m over this? How long until I go a day without thinking about him? When will I stop questioning why wasn’t I good enough? I believe he wasn’t the one but still it would’ve been nice if he was. How much time till I’m over this?