The	tells	that	one	person	has	when	lying	may	be	entirely	different	from	the next	person's. 	Some	people	cross	their	arms	because	they	are	upset,	anxious, shy,	or	something	else,	and	yet	for	some,	it	does	not	mean	nearly	as	much because	it	is	a	neutral	stance. 	Perhaps	it	is	just	a	bit	chilly. 	Try	to	establish	a baseline,	and	see	if	you	can	get	to	know	them	at	their	most	neutral	state. 	The longer	you	know	a	person,	the	easier	it	is	to	understand	their	behavior	and	body language. 	 Keep	an	open	mind. Your	mind	must	be	receptive	to	new	information	and	ideas. 	Sometimes humans	tend	to	fancy	an	idea	they	have	conjured	in	their	minds	without	any reasoning	or	evidence,	and	fixate	on	it	entirely. 	You	must	not	try	to	alter	the facts	to	fit	your	theory,	but	rather,	alter	your	theory	to	align	with	the	facts. Additionally,	keeping	your	mind	open	 requires	you	to	question	your surroundings. 	Do	not	fall	into	the	trap	of	believing	everything	you	hear	or	see. Know	what	to	believe	when.