1. “I” is only used when you are the subject of the sentence; in other words, you are the one taking the action.
Example: I went to school on the bus.
People sometimes get confused about using I or me when another person is added to the sentence. When in doubt do a simple test: remove everyone else from the sentence except yourself and see how it sounds.
For example, should it be, “Ron and I went to the library” or “Ron and me went to the library”?
Take out Ron and it’s either “Me went to the library” or “I went to the library.”
Unless you’re Tarzan, the answer is ‘ I’ so the correct grammar is “Ron and I went to the library.”
2. The pronoun “me” is only used in a sentence when someone else will perform the action to you/for you. If unsure, once again, take yourself out of the sentence.
Which of the following is correct?
a) If you have questions, please call Debbie or I.
b) If you have questions, please call Debbie or me.
c) If you have questions, please call Debbie or myself.
By taking out the other person (Debbie), it’s obvious:
a) “If you have questions, please call I” and c) “If you have questions, please call myself” do not sound correct.
Therefore, the correct format is b) If you have questions, please call Debbie or me.
3. The pronoun “myself” should only be used when you are performing an action on yourself.
Examples: I took the garbage out myself. I washed the dishes myself.
If there is another person in the sentence, once again, do the test by taking the other person out of the sentence:
Not sure if it should be “I got some lunch for Jillian and myself”?
Take out Jillian and do the check: “I got some lunch for myself.” Yes, it sounds correct so it’s “I got some lunch for Jillian and myself.”
Walker, Jennifer. “Common Grammar Mistakes Part One: Me, Myself or I?” Yahoo! Voices. Yahoo Inc., 2013. Web. 12 Feb. 2013.