For me, a perfect way to assist at Mass is after I have recently made my confession, performed my penance, and spent about an hour or so in solitary prayer in the company of the Blessed Virgin immediately before Mass. Thus recollected, it seems to me, just about anything can go on at Mass and I do not mind at all.
I am so grateful for Mass and the sacraments and Our Lady and the angels and saints and for the grace to receive Jesus in Holy Communion - who remains with us always...
St Teresa notes that we can obtain the prayer of recollection for ourselves, "for this is not a supernatural state [a passive recollection which can only be produced by divine motion], but depends upon our own volition; and by God's favour, we can enter it of our own accord."
Therefore, it is important to know what the soul should do in order to practise this prayer, and this can be reduced to two things: "The soul collects together all its faculties and enters within itself to be with its God" (ibid, 28). Our senses, imagination, and intellect tend spontaneously toward exterior things, on which they are dispersed; therefore, the soul, by a prolonged, resolute act of the will, ought to withdraw them from these exterior things in order to concentrate them on interior things -- in this little heaven of the soul where the Blessed Trinity dwells. This exercise, especially in the beginning, requires effort and energy and it will not be easy at first. However, the Saint teaches, "let the soul try to cultivate the habit, despite the fatigue entailed in recollecting itself and overcoming the body which is trying to reclaim its rights." Little by little, "as a reward for the violence which it had previously done to itself" (ibid.), recollection will become easy and delightful; the senses will obey promptly; and even if the soul is not entirely from distractions, it will not be so hard to overcome them.
"O my God, You are in me and I am in You. I have found my heaven on earth, since heaven is You, O Lord, and You are in my soul. I can find You there always; even when I do not feel Your presence, You are there nevertheless, and I like to seek You there. Oh! if only I could never leave You alone!" (cf. Sr Elizabeth of the Trinity, Letters) - Divine Intimacy