To produce a confident dog you need to become their pack leader. And you will do this by teaching them basic dog obedience exercises: Sit, down / drop, come, heel and stay. Obedience exercises teach your dog that you are in charge and that you are the pack leader . With regular ‘reward based marker training’, your dog will trust you and be confident in your consistency. In your training, reward obedience with high value treats' to affirm your approval. This approval will build confidence and your dog feel secure.

Routine and consistency are so critical to your labrador becoming settled, secure and confident. Resist the temptation to coddle your dog when they exhibit insecure behaviour. Reassure your dog with consistent and patient leadership and particularly during training sessions.
Direct your dog with decisive, calm and clear commands. Dogs get over their fears by finding success and reward in their obedience training.
When i’m working with an insecure dog I adopt an affirming communication even when I say ‘no’. ‘No’ must not communicate disapproval. I want ‘no’ to communicate that we need to ‘try again’. There is little benefit in giving a frustrated, angry or aggressive response to your dog and particularly if the dog does not understand. ‘No’ means ‘not that’, and ‘back to the beginning’.
In this way it is important that my dog knows that i’m not giving them a choice. We don't reason with our dogs even intelligent breeds like labradors because they have little capacity for logic. Dogs learn through action, repetition, consistency and reinforcement. Repetition builds confidence so it is important to keep working until your dog attempts to obey your direction. Repetition builds familiarity, builds confidence and teaches your dog how to be successful. Reinforce success with high value treats.Make your training sessions consistent but short and successful. Finish with success.