<noun.cognition> the burden of responsibility that's a load off my mind
any obstruction that impedes or is burdensome
<noun.artifact>
Incumbrance \In*cum"brance\, n. [See {Encumbrance}.] [Written also {encumbrance}.] 1. A burdensome and troublesome load; anything that impedes motion or action, or renders it difficult or laborious; clog; impediment; hindrance; check. --Cowper.
2. (Law) A burden or charge upon property; a claim or lien upon an estate, which may diminish its value.