Meditation is the ‘practice’ of using a technique to help focus your attention, consciously.
Mindfulness is a particular ‘quality, condition or state of mind’, that is enabled by the 'practice' of meditation.
Meditation is a 'skill'. To learn a new skill we have to practice it.
Through the regular practice of meditation one can develop 'Mindfulness'.
Mindfulness is paying attention with intention. When you sit for a formal meditation it helps train the mind and one’s attention to concentrate more fully, whether it is on our breath, thoughts, body, or surroundings – this then reflects back into our everyday life – we become more aware of how we interact with the world around us, ourselves, enjoying all of it right now.
Meditation is the practice of this conscious attention. When the mind is consciously, fully focussed, aware and attentive; that can be called meditation. The ‘practice’ of meditation is when one uses on of these techniques to help keep the mind in that conscious, aware state.
Mindfulness Meditation is when we use one or several ways of trying to keep that attention; such as watching the breath, or the sensations in the body, or sounds around us, or using a mantra or word to help us stay focussed. Whichever technique or method one uses, it still has the same effect on the mind and the body. Choosing which method feels easier or more comfortable for you makes it easier to keep a regular practice. One then looks forward to this time for ourselves.
These practices, combined with accepting and calmly and kindly letting go when thoughts arise, which they will, constantly, but with regular practice the brain gets used to this noticing that we have wondered off in thought, that is the practice. Thoughts are not our enemy, we just learn to watch them and being kind to ourselves we let them go. These practices of meditation then transfer into our everyday life; we understand our thoughts and the emotions that arise from them have less of a hold on us.