I will tell you that take the opportunity to become an Adobe Certified Expert. It will give you more confidence on the programs that you like.
Also, when you go and ask for a job and you put in your resume that you are an ACE in Photoshop or any Adobe software, it will let them know that you really know the program, even if you are not an expert on the program at least you are telling them that you are capable to study and practice to passed the test.
I will encourage you to at least try to do one of the test.
Here is an excellent article that talks about someone who took the test and apply for a job. Click here