Concentration technique (Dharana); an essential ingredient and paradoxical side effect of meditation (Dhyana).
Though concentration is a benefit of practicing meditation, it is also essential from the outset.
People can become frustrated with "meditation" because one of the first things to arise in the practitioner is a less a struggle with meditation itself but with an inability to concentrate.
Breathing techniques or fixing of the eye gaze are effective objects to begin practicing this technique.
Note the clarity in mentioning concentration technique rather than pure concentration itself. We might be better recognising the difference that when concentration becomes a mode of doing rather than the concept, meditation has actually begun.
Concentration is the likely difficulty, not meditation.