It is unhealthy to focus on only one chakra, particularly a higher chakra like the brow center. A balanced approach is best, giving some attention to all chakras. They need to be activated from the base center upwards. This provides balance and healthy energy body development.

However, a little extra attention on the brow center will do no harm. And meditations that focus on the brow center will also do no harm, so long as you are also regularly working on your lower centers.

As for calling for help, your intention and efforts here will help regardless of there being no apparent immediate effect.

robert