Concentration is necessary to master before deep meditation can occur.
The ability to concentrate develops one pointedness of mind.
External methods of concentration involve using the senses.
An example is Trataka,
Gazing at a candle flame,
A practice done at bedtime and recommended for insomnia.
This uses a sense of vision to enhance concentration.
Trataka is a great technique for beginners who find it difficult to meditate.
Traditionally this is done using a ghee lamp,
But a candle will suffice.
The candle flame should be slightly lower than the gaze of the eyes and a foot or more away from you.
Gaze at the flame for as long as you can without blinking and with complete concentration until the eyes start to tear.
Then close the eyes and the image of the flame will appear in your mind's eye.
Keep the gaze fixed on this inner flame known as the jus,
The flame of awareness.
The jus is the pure light that radiates from the heart.
Repeat this technique two more times.
Gaze at the flame without blinking and then see the image with the eyes closed.
Concentration is necessary to master before deep meditation can occur.
The ability to concentrate develops one pointedness of mind.
Internal methods of concentration draw the mind inwards and do not engage the senses.
For example,
Focusing on a visual symbol in the mind's eye develops this ability.
Keeping the eyes closed,
Visualize a symbol that you have a particular affinity for.
The symbol can be an aspect of nature,
The moon,
A mountain,
A flower,
A tree,
A waterfall.
It may be a deity or religious symbol if that appeals to you.
Focus on the symbol for the rest of your practice.
Simply observe the thoughts that come and go.
If the mind gets attached to any one thought,
Then gently bring the awareness back to the symbol.
This will be challenging in the beginning,
But with practice,
The attention will remain fixed on the chosen symbol.
Continue to focus on your symbol and reflect on its shape,
Form,
Color.
Stay deeply.
Now,
Let go of the concentration.
Simply observe the breath.
Observe the mind.
And notice the effects of this practice on your body,
Mind,
And spirit.