My $0.02 -- be yourself. Allow yourself to be a human. Humans have strong opinions sometimes. Sometimes they don't. Don't place too much value on micro-characteristics like "this awesome software engineer always uses gdb" or "this magnificent coder only debugs with printf". The reality is that always using debuggers or never using debuggers is probably not what makes these people magnificently awesome in your opinion.

Keep an open mind. Learn from others do and adopt the practices you like. It's fine if you develop strong opinions as you go along, but don't be an ass about it.