Trying to change size of logo in Nav Bar

Hi I’m trying to resize my logo on my nav bar and when I resize it to be bigger it makes the nav bar HUGE!
How can I resize it so that it wont change the size of the nav bar?
TIA!

Hi,

Your logo have a big space on the top and bottom, maybe you can the image which have less space on it? http://prntscr.com/fgqrid

Regards,
Awan