Expect a good lucid dream to come, chances are if you do, then some really amazing ones will come to your surprise (And I’ve had MANY amazing ones - check out my dream journal). You really just have to believe that you have full control. If even the slightest doubt of control happens, you will lose control and sometimes have to fight to gain it back (I’ve had those sometimes, too).
The reason why is that dreams are literal or metaphorical manifests of our own thoughts (not just during the day, during your dreams as well). Just let your own mind surprise you with positive thoughts, not frustration.
If you catch yourself thinking “aw man, I can’t control…” then change it to “yes, I can control it! This is easy!” And it will become very easy to control it.