NO NO NO, you objective SHOULD NOT be to better yourself, it should be to HELP THE COMPANY. ARRGH! I mean, look at it this way, you resume is like your sales pitch, the company wants to hire you to help them make money.
And your objective says, not that you want to help the company, but that you want to help yourself, this implies that:
1. You have a deficiency (because you're trying to better yourself)
2. You are selfish.
This is not true, but the resume makes it look that way.
Say stuff like,
I would like to help this company by using my skills as XYZ in this way. I am qualified to meet the challenge and hope to help the company suceed...