St. John Cassian writes against the idea of “since one cannot partake of Holy Communion often worthily, it is better to abstain from them.” St. John Cassian says:
We must not avoid communion because we deem ourselves to be sinful. We must approach it more often for the healing of the soul and the purification of the spirit, but with such humility and faith that considering ourselves unworthy, we would desire even more the medicine for our wounds. Otherwise it is impossible to receive communion once a year, as certain people do, considering the sanctification of heavenly Mysteries as available only to saints. It is better to think that by giving us grace, the sacrament makes us pure and holy. Such people manifest more pride than humility, for when they receive, they think themselves as worthy. It is much better if, in humility of heart, knowing that we are never worthy of the Holy Mysteries we would receive them every Sunday for the healing of our diseases, rather than, blinded by pride, think that after one year we become worthy of receiving them.
Excerpt taken from the book: Great Lent, By Fr. Alexander Schmemann