Actually it is not difficult. Since both of these are ideas with no real substance, they are already reconciled. More accurately, there is nothing to reconcile, other than maybe examining in more depth how exactly these terms are used and in exactly what contexts.
It can help to recognize that neither points to anything real. In that sense they are the same.
More importantly, look after yourself and others to the best of your abilities. Generate benefit where possible and most importantly, avoid harming yourself or other as much as possible. Then these philosophical ideas fade into their natural background, as no more than intellectual entertainment. The main thing is to live well.
This is essentially no different from understanding both no-self and and higher self at once.