You wrote "I need to get the "davidadams$" out of that line but I don't know how to navigate out of it. Any help would be awesome, thanks"
I think this is a different question than "how to navigate into certain directories" which is what everybody else is answering. Here's help on answering your second question.
Your prompt has three chunks of data:
The first chunk
David-Adamss-MacBook-Pro is your computer's name (as known by the shell).
The second chunk
~ is the current directory; your home directory is often shown as '~'.
The third chunk
davidadams is your username.
Changing the current directory, the first part of your question, will change only the second part of your prompt, almost certainly it will be longer.
The definition for your prompt is defined in one of the "dot" files in your home directory, probably ".bashrc". Since I don't know which shell you are using I can't be more specific. My prompt is really simple and looks like this:
Same info (username, computer name and home directory) and the $ prompt on the next line. It's in colors as defined by this prompt string in my system bashrc file.
PS1='\[\e]0;\w\a\]\n\[\e[32m\]\u@\h \[\e[33m\]\w\[\e[0m\]\n\$ '
I hope this helps.