Whence comes my lack of peace and obstacles over which I stumble?

Psa 119:165 Those who love Your law have great peace, And noth­ing caus­es them to stum­ble. (NAS­B­Str)

So much in this world seems so dif­fi­cult to man­age, in terms of just liv­ing day to day. How much of that dif­fi­cul­ty do I cre­ate myself because I’m reach­ing for some­thing oth­er than what God gives and com­mands. Fun­ny how I can tie my own shoelaces togeth­er w/o notic­ing our remem­ber­ing and then cry foul when I lat­er come crash­ing down.