Drush: “Command pm-enable needs a higher bootstrap level to run”

When running drush you can run into this error message. In my case, the mysql command line tool provided with Mamp Pro was not available. You can easily test this by typing the command ‘mysql’ in terminal. Your output might be -bash: mysql: command not found.

To solve this, do the following in terminal:
sudo vim ~/.bash_profile
Press i
Move to the last line and append
export PATH=/Applications/MAMP/Library/bin/:$PATH
Hit escape
Type in :wq (including the colon) to write the file and quit vim.
Reload your profile by running source ~/.bash_profile.

The mysql command AND drush should now work!