The truth is that the financial side of things is always going to be a tricky thing to be in charge of completely and to learn to master, but as long as you are happy to do whatever you can to make it work as well as possible, you should find that there are things that you can do, and that it might be even easier than you had thought to get in charge of your finances once and for all.
As long as you are happy to make these kinds of changes, you will soon find that you are going to end up in a much better situation, so that is something to be aware of too.
Most people who are in continual financial trouble are in such a situation because they are having to borrow all the time, and are in a hole where they just need to keep borrowing in order to keep up with their daily life costs.
A good way to do this is to only use cash wherever possible, as tapping a card tends to have a way of removing us somewhat from the actual experience of spending money.