Complex sentence: Now in his early 20s, he was soon able to find employment elsewhere, however, he would frequently be dismissed for drunkenness, gambling, idleness and negligence often drifting from job to job until being hired to a livery-stable in Piccadilly.
Split into simpler sentences: Now in his early 20s, he was soon able to find employment elsewhere. However, he would frequently be dismissed for drunkenness, gambling, idleness and negligence, often drifting from job to job until being hired by a livery-stable in Piccadilly.