+1 on play often.
Try and focus on relaxing.
Don't "squeeze" the neck / frets.
You have plenty of fingers, learn to use them. (edit - including using your thumbs)
Pick a bass that feels good and sounds good to YOU.
Read, read, read about the bass.
Listen, listen listen for the bass in all kinds of music.
Play with other musicians when possible.
Don't work on developing an ego.
Play often.
