Yes

Yes, I agree with the above statement, as self-actualisation is only achieved by discipline. Self-actualisation is the realisation or fulfilment of one’s talent and potentials. This is shown through discipline as discipline means to obey rules or code of behaviour, with punishment if disobedient. These two factors work together to bring a person to realise their talent and potential.
Self-actualised people tend to have many characteristics. These are such as: they have experience, they are realistic, they possess self-acceptance, they are normally problem-centred, are independent, they respect their privacy and solitude, have a thoughtful sense of humour, and they enjoy the journey getting to their goal, not just what they are trying to achieve. All the points mentioned where done through being educated through discipline.