Sorry, why is it that you receive Holy Communion, again?
If you are not properly disposed, you should not offend your beloved Bridegroom and disobey Holy Church only because it would be kind of embarassing. Eternal damnation is even more embarassing, since the whole Communion of Saints, with God and the Blessed Virgin, will be watching how you cannot enter the heavenly supper of the Lamb.
I am not trying to be harsh, just putting thins a bit in perspective. To receive communion daily, live as to be worthy of this. Otherwise, it’s better not to.
Trust me, we all struggle with lust. I’ve wished with my whole heart that I did not need to confess. But yes, it is mortal sin, it suffices for eternal damnation, and things won’t get any better if we add sacrilege on top of it.
Age or time of addiction is not important at all. What matters is that we have a radical conversion. This means to acknowledge that it is most gravely hurtful to God to seek sexual pleasure as an end, in a selfish way, precluding the gift of life - which is what lust is. Often lust is rooted on some other sin (Ex. pride, or vanity), so proper spiritual direction is needed to be able to be victorious.
I can promise you one thing: if you humble yourself, stop partaking of Holy Eucharist until the time you are properly disposed, and repent to never sin again (not thinking, as I used to do before sinning, that you can confess tomorrow, because that is tempting God and could have a very unfortunate result), then you will be free from this sin by the grace of God. Because the Almighty never allows a temptation without giving us enough grace to be victorious.
Remember that an Act of Spiritual Communion is always a choice when we cannot communicate. Don’t be embarrassed, just remain seated and pray. Nobody looks at others when communicating - all are (or should be) focused on the Divine Bridegroom.
Please, I advice that you meditate daily on the Blessed Virgin, possibly before an icon (painting, statue). Do this daily, for the only way to develop sheer disgust towards lust is to learn what purity is. And, paraphrasing a quote from a notorious secular movie, nobody can tell you what purity is: you have to see it for yourself. Abandon yourself in the arms of Our Lady, the Blessed Virgin, and you shall resemble her more and more.