How can I be good at physics ? please help

I'm a medical student and we study the physics ,I study everyday ,also I search online for more information, I spend lots of time in studying it, and I'm still not good at it , Please any advises can help be to be better, I want to get a good marks :(

Here are some tips that have helped my cousin.
1. spend time talking to and socializing with physics students.
2. read fun physics and science magazines.
eg. new scientist, popular mechanics
3. make sure you fully under stand the basics.
4. make sure you know the language, under stand what the terms mean.
5.stick at it does come, u will have a brake through

A common mistake when studying physics is in thinking that memorizing the equations is the same as learning the physics. It isn't.

Memorizing equations without understanding the physics those equations are describing is like memorizing the words to some foreign language without knowing the grammar, vocabulary, and syntax of that language. You really have to learn the physics before the equations will become meaningful and useful.

How?

Start by learning the laws of physics so that you can explain them to your younger sibling in plain language so he or she understands it. A first step in learning those laws is in memorizing the critical definitions, the terminology, used in those laws.

For example, when studying the conservation of energy law you should be able to tell your younger sibling the difference between energy, force, potential energy, kinetic energy, total energy, and what it means to "conserve" energy. No equations here, just words, mostly definitions.

You should also be able the cite the laws verbally...again no equations. Most laws can be cited in two or three sentences at most. And these are the things you should be memorizing, the definitions and the laws; not the equations. Those you derive.