The idiom "Royal Road" generally refers to the Easy way
Royal road means an easy or direct way of achieving a desired end
In "The Oyster and the Pearl" by William Saroyan, the watch repairer, is Preston Lockhart.
We can get triumph over all obstacles
ہم تمام رکاوٹوں پر فتح حاصل کر سکتے ہیں۔
The word "over" is used as a preposition to indicate the spatial or metaphorical position of triumph relative to obstacles.
Wallow" in that context means to roll around or indulge excessively in negative emotions.
It's like being stuck or immersed deeply in those feelings.