Retrieval Practice helps you remember things quite well actually. Retrieval Practice helps you carve what you're trying to remember into your brain. Let's say you need help trying to remember something doing flashcards is a type of retrieval practice. Doing this will help probably help you out because it had helped me many times when I need to study a bunch of terms for a test or quiz.
Chunking is pretty helpful if you're dealing with a bunch of things at once. You can use it to remember groups. Lets saying your trying to remember a bunch of colors. Put the colors in groups like dark colors go into one group and bright colors go into another. It helps more than you would think It helped me out everytime I've used it.
I have also used spaced practice and I think it is quite effective. I like to spread things out over a period of time so I don't cram myself. It helps you remember stuff if you don't cram yourself with a bunch of information at once because you won't remember it all. Let's say you spread 7 hours over a week you'll remember better than doing all 7 hours that day.
Interleaving is also really helpful with remembering things. Lets say theres a test coming up should you practice the same ones over and over or should you switch it up when studying things? Studies show that switching up your words you're studying you'll remember them better. I have not used this yet but I am going to the next time i study. I feel like it will help me out when i use it because switching up things helps you refresh my mind when I switch up things.
Elaboration helps you remember things by you adding more details to a certain subject. For example let say your doing vocabulary and if you elaborate on a word like a synonym for each vocabulary word you will remember it better. I have done this before and it has helped me because it roots the words into my brain.